Combination Squares
Replace your try square, miter square, depth gauge, marking gauge, 90° level, ruler, and scriber with one tool. Blades labeled with numeric increments that are less than 1" are quick-reading. All have wear-resistant etched markings.
Square head checks 90° angles.
Center head identifies the center on pipes, rods, and shafts.
Protractor head measures angles.
Angle finder measures any angle from 0° to 90° and has a chart to convert angle to pitch.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/200/2007a9c1-a01a-digital-master1557347252-p9@halfx_636929260554409492.png?ver=imagenotfound)
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Blade | Graduation | Plastic Head | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Blade Lg. | Front Graduation Marks (Numeric Increments) | Back Graduation Marks (Numeric Increments) | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Inch/Metric | |||||||||||
12"/304mm | 32nds (8/32"), Millimeters (10 mm) | Millimeters (10 mm), 16ths (1") | 1" | 3/32" | Stainless Steel | Silver | Black | Etched | 4 9/16" | 000000 | 00000 |
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Blade | Graduation | Zinc Head | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Blade Lg. | Front Graduation Marks (Numeric Increments) | Back Graduation Marks (Numeric Increments) | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Inch | |||||||||||
6" | 16ths (1"), 32nds (1") | 8ths (1"), 16ths (1") | 13/16" | 5/64" | Stainless Steel | Silver | Black | Etched | 3 11/16" | 000000 | 000000 |
12" | 16ths (1"), 32nds (1") | 8ths (1"), 16ths (1") | 1" | 3/32" | Stainless Steel | Silver | Black | Etched | 4 5/8" | 000000 | 00000 |
16" | 16ths (1"), 32nds (1") | 8ths (1"), 16ths (1") | 1" | 3/32" | Stainless Steel | Silver | Black | Etched | 4 5/8" | 000000 | 00000 |
Inch/Metric | |||||||||||
6", 150mm | 32nds (8/32"), Millimeters (10 mm) | Millimeters (10 mm), 16ths (1") | 13/16" | 5/64" | Stainless Steel | Silver | Black | Etched | 3 11/16" | 00000000 | 00000 |
12", 300mm | 32nds (8/32"), Millimeters (10 mm) | Millimeters (10 mm), 16ths (1") | 1" | 3/32" | Stainless Steel | Silver | Black | Etched | 4 5/8" | 00000000 | 00000 |
16", 400mm | 32nds (8/32"), Millimeters (10 mm) | Millimeters (10 mm), 16ths (1") | 1" | 3/32" | Stainless Steel | Silver | Black | Etched | 4 5/8" | 00000000 | 00000 |
Metric | |||||||||||
150mm | Millimeters (10 mm), Millimeters (10 mm) | Millimeters (10 mm), Millimeters (10 mm) | 13/16" | 5/64" | Stainless Steel | Silver | Black | Etched | 3 11/16" | 0000000 | 00000 |
300mm | Millimeters (10 mm), Millimeters (10 mm) | Millimeters (10 mm), Millimeters (10 mm) | 1" | 3/32" | Stainless Steel | Silver | Black | Etched | 4 5/8" | 0000000 | 00000 |
400mm | Millimeters (10 mm), Millimeters (10 mm) | Millimeters (10 mm), Millimeters (10 mm) | 1" | 3/32" | Stainless Steel | Silver | Black | Etched | 4 5/8" | 0000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/200/2004a11c1-a01a-digital-master1557346646-p9@halfx_636929254487048454.png?ver=imagenotfound)
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Blade | Graduation | Zinc Head | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Blade Lg. | Angle Finder Angle Measuring Range | Front Graduation Marks (Numeric Increments) | Back Graduation Marks (Numeric Increments) | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Inch/Metric | ||||||||||||
12"/300mm | 0°-90° | Millimeters (10 mm), 32nds (4/32") | Millimeters (10 mm), 16ths (1") | 1" | 5/64" | Steel | Silver | Black | Etched | 4" | 0000000 | 000000 |
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Blade | Graduation | Aluminum Heads | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Blade Lg. | Front Graduation Marks (Numeric Increments) | Back Graduation Marks (Numeric Increments) | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Inch/Metric | |||||||||||
12"/300mm | Millimeters (10 mm), 32nds (4/32") | Millimeters (10 mm), 16ths (1") | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/4" | 000000 | 000000 |
Starrett High-Accuracy Combination Squares
Replace your try square, miter square, depth gauge, height gauge, center-point finder, and level. The blade on these squares meets Fed. Spec. GGG-R-791H, which establishes uniform standards for accuracy, graduations, and size. Blades are labeled with numeric increments that are less than 1" for quick reading. All have wear-resistant etched markings.
Square head checks 90° angles. Center head identifies the center on pipes, rods, and shafts. Protractor head measures angles.
Satin-chrome blade finish is corrosion resistant and reduces glare. Hardened-steel heads are more durable and last longer than cast iron heads.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/210/2108a21c1-a01a-digital-master1560870356-p9@halfx_636964491602473267.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/195/1955a34c1-a01a-digital-master1555014914-p9@halfx_636598984540560000.png?ver=imagenotfound)
Blade | Graduation | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Blade Lg. | Front Grad. Marks (Increments) | Back Grad. Marks (Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Cast Iron Head | ||||||||||||
Inch | ||||||||||||
4" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.002" to +0.004" | 5/8" | 1/16" | Satin-Chrome Steel | Silver | Black | Etched | 2 1/4" | 0000000 | 0000000 |
Hardened Steel Head | ||||||||||||
Inch | ||||||||||||
4" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.002" to +0.004" | 5/8" | 1/16" | Satin-Chrome Steel | Silver | Black | Etched | 2 1/4" | 0000000 | 000000 |
Replacement Lockbolt for Square and Center Heads | 0000000 | Each | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/210/2108a11c1-a01a-digital-master1560803372-p9@halfx_636963821936489455.png?ver=imagenotfound)
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Blade | Graduation | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Blade Lg. | Front Grad. Marks (Increments) | Back Grad. Marks (Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Cast Iron Head | ||||||||||||
Inch | ||||||||||||
4" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.002" to +0.004" | 5/8" | 1/16" | Satin-Chrome Steel | Silver | Black | Etched | 2 1/4" | 0000000 | 0000000 |
Replacement Lockbolt for Square and Center Heads | 0000000 | Each | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/210/2108a23c2-a01a-digital-master1555014921-p9@halfx_636598984598220000.png?ver=imagenotfound)
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![](/prerenderstable/mvPRE/contents/gfx/imagecache/195/1955a44c1-a01a-digital-master1555014914-p9@halfx_636598984540600000.png?ver=imagenotfound)
Blade | Graduation | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Blade Lg. | Front Grad. Marks (Increments) | Back Grad. Marks (Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Cast Iron Head | ||||||||||||
Inch | ||||||||||||
6" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.002" to +0.004" | 3/4" | 5/64" | Steel | Silver | Black | Etched | 2 13/32" | 0000000 | 0000000 |
6" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.002" to +0.004" | 3/4" | 5/64" | Satin-Chrome Steel | Silver | Black | Etched | 2 13/32" | 0000000 | 000000 |
6" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.002" to +0.004" | 3/4" | 5/64" | Satin-Chrome Steel | Silver | Black | Etched | 2 13/32" | 0000000 | 000000 |
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.005" | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.005" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
12" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0035" to +0.005" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
18" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.006" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
24" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.007" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
Inch/Metric | ||||||||||||
11 3/4"/300mm | 1/2 mm (10 mm), 32nds (4/32") | Millimeters (10 mm), 64ths (8/64") | -0.0035" to +0.005"/ -0.09 mm to +0.15 mm | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
23 1/2"/600mm | 1/2 mm (10 mm), 32nds (4/32") | Millimeters (10 mm), 64ths (8/64") | -0.0035" to +0.007"/ -0.11 mm to +0.25 mm | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
Hardened Steel Head | ||||||||||||
Inch | ||||||||||||
6" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.002" to +0.004" | 3/4" | 5/64" | Satin-Chrome Steel | Silver | Black | Etched | 2 13/32" | 0000000 | 000000 |
6" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.002" to +0.004" | 3/4" | 5/64" | Satin-Chrome Steel | Silver | Black | Etched | 2 13/32" | 0000000 | 000000 |
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.005" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
12" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0035" to +0.005" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
18" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.006" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
24" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.007" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
24" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0035" to +0.007" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
Inch/Metric | ||||||||||||
11 3/4"/300mm | 1/2 mm (10 mm), 32nds (4/32") | Millimeters (10 mm), 64ths (8/64") | -0.0035" to +0.005"/ -0.09 mm to +0.15 mm | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
23 1/2"/600mm | 1/2 mm (10 mm), 32nds (4/32") | Millimeters (10 mm), 64ths (8/64") | -0.0035" to +0.007"/ -0.11 mm to +0.25 mm | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/210/2108a13c2-a01a-digital-master1555014921-p9@halfx_636598984597590000.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/195/1955a34c1-a01a-digital-master1555014914-p9@halfx_636598984540560000.png?ver=imagenotfound)
Blade | Graduation | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Blade Lg. | Front Grad. Marks (Increments) | Back Grad. Marks (Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Cast Iron Head | ||||||||||||
Inch | ||||||||||||
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.005" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 0000000 |
Hardened Steel Head | ||||||||||||
Inch | ||||||||||||
6" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.002" to +0.004" | 3/4" | 5/64" | Satin-Chrome Steel | Silver | Black | Etched | 2 13/32" | 0000000 | 000000 |
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.005" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/210/2108a51c2-a01a-digital-master1555014922-p9@halfx_636598984598760000.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/195/1955a34c1-a01a-digital-master1555014914-p9@halfx_636598984540560000.png?ver=imagenotfound)
Blade | Graduation | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Blade Lg. | Front Grad. Marks (Increments) | Back Grad. Marks (Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Cast Iron Head | ||||||||||||
Inch | ||||||||||||
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.005" | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 0000000 |
18" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.006" | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
24" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.007" | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
![]() | ![]() Inch |
![]() Inch/Metric |
Blade | Graduation | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Blade Lg. | Front Grad. Marks (Increments) | Back Grad. Marks (Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Cast Iron Head | ||||||||||||
Inch | ||||||||||||
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.005" | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 0000000 |
12" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0035" to +0.005" | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
18" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.006" | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
24" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.007" | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
Inch/Metric | ||||||||||||
11 3/4"/300mm | 1/2 mm (10 mm), 32nds (4/32") | Millimeters (10 mm), 64ths (8/64") | -0.0035" to +0.005"/-0.09 mm to +0.15 mm | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
23 1/2"/600mm | 1/2 mm (10 mm), 32nds (4/32") | Millimeters (10 mm), 64ths (8/64") | -0.0035" to +0.007"/-0.11 mm to +0.25 mm | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
Hardened Steel Head | ||||||||||||
Inch | ||||||||||||
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.005" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
12" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0035" to +0.005" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
18" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.006" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
18" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0035" to +0.006" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
24" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.007" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
24" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0035" to +0.007" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
Inch/Metric | ||||||||||||
11 3/4"/300mm | 1/2 mm (10 mm), 32nds (4/32") | Millimeters (10 mm), 64ths (8/64") | -0.0035" to +0.005"/-0.09 mm to +0.15 mm | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
23 1/2"/600mm | 1/2 mm (10 mm), 32nds (4/32") | Millimeters (10 mm), 64ths (8/64") | -0.0035" to +0.007"/-0.11 mm to +0.25 mm | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
Starrett High-Accuracy Combination Square Blades
![](/prerenderstable/mvPRE/contents/gfx/imagecache/195/1955a34c1-a01a-digital-master1555014914-p9@halfx_636598984540560000.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/195/1955a44c1-a01a-digital-master1555014914-p9@halfx_636598984540600000.png?ver=imagenotfound)
Use these blades with Starrett High-Accuracy Combination Square Heads. They meet Fed. Spec. GGG-R-791H, which establishes uniform standards for accuracy, graduations, and size. Blades are labeled with numeric increments that are less than 1" for quick reading. All have wear-resistant etched markings.
Satin-chrome finish is corrosion resistant and reduces glare.
Graduation | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Front Graduation Marks (Numeric Increments) | Back Graduation Marks (Numeric Increments) | Accuracy | Wd. | Thick. | Color | Color | Mark Style | Appearance | Each | |
Inch | |||||||||||
Chrome Plated Steel | |||||||||||
4" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.002" to +0.004" | 5/8" | 1/16" | Silver | Black | Etched | Satin | 0000000 | 000000 |
6" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.002" to +0.004" | 3/4" | 5/64" | Silver | Black | Etched | Satin | 0000000 | 00000 |
6" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.002" to +0.004" | 3/4" | 5/64" | Silver | Black | Etched | Satin | 0000000 | 00000 |
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.005" | 1" | 3/32" | Silver | Black | Etched | Satin | 0000000 | 00000 |
12" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0035" to +0.005" | 1" | 3/32" | Silver | Black | Etched | Satin | 0000000 | 000000 |
24" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.007" | 1" | 3/32" | Silver | Black | Etched | Satin | 0000000 | 000000 |
24" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0035" to +0.007" | 1" | 3/32" | Silver | Black | Etched | Satin | 0000000 | 000000 |
36" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.007" | 1" | 3/32" | Silver | Black | Etched | Satin | 0000000 | 000000 |
Inch/Metric | |||||||||||
Chrome Plated Steel | |||||||||||
11 3/4"/300mm | 1/2 mm (10 mm), 32nds (4/32") | Millimeters (10 mm), 64ths (8/64") | -0.0035" to +0.005"/-0.09 mm to +0.15 mm | 1" | 3/32" | Silver | Black | Etched | Satin | 0000000 | 000000 |
23 1/2"/600mm | 1/2 mm (10 mm), 32nds (4/32") | Millimeters (10 mm), 64ths (8/64") | -0.0035" to +0.007"/-0.11 mm to +0.25 mm | 1" | 3/32" | Silver | Black | Etched | Satin | 0000000 | 000000 |
Starrett High-Accuracy Combination Square Heads
Attach to Starrett High-Accuracy Combination Square Blades with the included lockbolts.
Square head checks 90° angles. Center head identifies the center on pipes, rods, and shafts. Protractor head measures angles.
Hardened-steel heads are more durable and last longer than cast iron heads.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/195/1955a13p1-upa01-@halfx_637606383318707925.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/211/21115a29p1-upa01-@halfx_637606383695724051.png?ver=imagenotfound)
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Protractor | |||||
---|---|---|---|---|---|
Component | For Blade Lgs. | Angle Measuring Range | Graduation Marks (Numeric Increments) | Each | |
Cast Iron | |||||
Square Head | 4" | __ | __ | 0000000 | 000000 |
Square Head with Built-in Level | 6" | __ | __ | 0000000 | 00000 |
Square Head with Built-in Level | 12"-48" | __ | __ | 0000000 | 00000 |
Center Head | 4" | __ | __ | 0000000 | 00000 |
Center Head | 6" | __ | __ | 0000000 | 00000 |
Center Head | 12"-48" | __ | __ | 0000000 | 00000 |
Nonreversible Protractor Head with Built-in Level | 12"-48" | 0°-180° | 1° (10°) | 0000000 | 000000 |
Reversible Protractor Head with Built-in Level | 12"-48" | 0°-180° | 1° (10°) | 0000000 | 000000 |
Hardened Steel | |||||
Square Head | 4" | __ | __ | 0000000 | 00000 |
Square Head with Built-in Level | 6" | __ | __ | 0000000 | 00000 |
Square Head with Built-in Level | 12"-48" | __ | __ | 0000000 | 000000 |
Center Head | 4" | __ | __ | 0000000 | 00000 |
Center Head | 6" | __ | __ | 0000000 | 000000 |
Center Head | 12"-48" | __ | __ | 0000000 | 000000 |
High-Accuracy Combination Squares
Use these squares in place of your try square, miter square, depth gauge, height gauge, center-point finder, and level. Blades are labeled with numeric increments that are less than 1" for quick reading. All have a corrosion-resistant satin-chrome finish that reduces glare and wear-resistant etched markings.
Square head checks 90° angles. Center head identifies the center on pipes, rods, and shafts. Protractor head measures angles.
Hardened cast iron heads are more durable and last longer than cast iron heads.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/211/21115a14c2-a01a-digital-master1555014923-p9@halfx_636598984600370000.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/211/21115a13c1-a01a-digital-master1557333893-p9@halfx_636929126978677971.png?ver=imagenotfound)
Blade | Graduation | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Blade Lg. | Front Grad. Marks (Increments) | Back Grad. Marks (Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Cast Iron Head | ||||||||||||
Inch | ||||||||||||
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0025" to +0.0025" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 00000000 | 0000000 |
Hardened Cast Iron Head | ||||||||||||
Inch | ||||||||||||
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0025" to +0.0025" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 00000000 | 000000 |
Replacement Lockbolt | 00000000 | Each | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/211/21115a13c2-a01a-digital-master1557325961-p9@halfx_636929047656489738.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/211/21115a13c1-a01a-digital-master1557333893-p9@halfx_636929126978677971.png?ver=imagenotfound)
Blade | Graduation | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Blade Lg. | Front Grad. Marks (Increments) | Back Grad. Marks (Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Cast Iron Heads | ||||||||||||
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0025" to +0.0025" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 00000000 | 0000000 |
Hardened Cast Iron Heads | ||||||||||||
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0025" to +0.0025" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 00000000 | 000000 |
Replacement Lockbolt | 00000000 | Each | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/211/21115a11c1-a01a-digital-master1555014922-p9@halfx_636598984599330000.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/211/21115a13c1-a01a-digital-master1557333893-p9@halfx_636929126978677971.png?ver=imagenotfound)
Blade | Graduation | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Blade Lg. | Front Grad. Marks (Increments) | Back Grad. Marks (Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Cast Iron Heads | ||||||||||||
Inch | ||||||||||||
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0025" to +0.0025" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 00000000 | 0000000 |
Hardened Cast Iron Heads | ||||||||||||
Inch | ||||||||||||
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0025" to +0.0025" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 00000000 | 000000 |
Replacement Lockbolt | 00000000 | Each | 00000 |
High-Accuracy Combination Square Heads
![](/prerenderstable/mvPRE/contents/gfx/imagecache/211/21115a27p1-upa01-@halfx_637607229973191255.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/211/21115a29p1-upa01-@halfx_637606383695724051.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/211/21115a32p1-upa01-@halfx_637607229772056118.png?ver=imagenotfound)
Attach to High-Accuracy Combination Square Blades with the included lockbolts.
Square head checks 90° angles.
Center head identifies the center on pipes, rods, and shafts.
Protractor head measures angles.
Zinc heads are lightweight and corrosion resistant. Cast iron heads are durable, so they resist dents and scratches. However, they corrode more easily than zinc heads. Hardened cast iron heads are more durable and last longer than cast iron heads.
Combination Square Heads | |||||||
---|---|---|---|---|---|---|---|
Protractor | Replacement Lockbolts | ||||||
Component | For Blade Lgs. | Angle Measuring Range | Graduation Marks (Numeric Increments) | Each | Each | ||
Zinc | |||||||
Square Head with Built-in Level | 12"-24" | __ | __ | 00000000 | 00000 | 000000000 | 00000 |
Center Head | 12"-24" | __ | __ | 00000000 | 0000 | 000000000 | 0000 |
Reversible Protractor Head | 12"-24" | 0°-180° | 1° (10°) | 00000000 | 00000 | 000000000 | 0000 |
Cast Iron | |||||||
Square Head with Built-in Level | 12"-24" | __ | __ | 00000000 | 00000 | 00000000 | 0000 |
Center Head | 12"-24" | __ | __ | 00000000 | 00000 | 00000000 | 0000 |
Reversible Protractor Head | 12"-24" | 0°-180° | 1° (10°) | 00000000 | 00000 | 00000000 | 0000 |
Hardened Cast Iron | |||||||
Square Head with Built-in Level | 12"-24" | __ | __ | 00000000 | 00000 | 00000000 | 0000 |
Center Head | 12"-24" | __ | __ | 00000000 | 00000 | 00000000 | 0000 |
High-Accuracy Combination Square Blades
![](/prerenderstable/mvPRE/contents/gfx/imagecache/211/21115a13c1-a01a-digital-master1557333893-p9@halfx_636929126978677971.png?ver=imagenotfound)
Blades are for use with High-Accuracy Combination Square Heads. Blades are labeled with numeric increments that are less than 1" for quick-reading. All have a corrosion-resistant satin chrome-plated finish that reduces glare and wear-resistant etched markings.
Graduation | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Lg. | Front Graduation Marks (Numeric Increments) | Back Graduation Marks (Numeric Increments) | Accuracy | Wd. | Thick. | Color | Color | Mark Style | Each | |
Inch | ||||||||||
Satin Chrome-Plated Steel | ||||||||||
6" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0025" to +0.0025" | 3/4" | 5/64" | Silver | Black | Etched | 00000000 | 000000 |
6" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0025" to +0.0025" | 3/4" | 5/64" | Silver | Black | Etched | 00000000 | 00000 |
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0025" to +0.0025" | 1" | 3/32" | Silver | Black | Etched | 00000000 | 00000 |
12" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0025" to +0.0025" | 1" | 3/32" | Silver | Black | Etched | 00000000 | 00000 |
18" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0025" to +0.0025" | 1" | 3/32" | Silver | Black | Etched | 00000000 | 00000 |
18" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0025" to +0.0025" | 1" | 3/32" | Silver | Black | Etched | 00000000 | 00000 |
24" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0025" to +0.0025" | 1" | 3/32" | Silver | Black | Etched | 00000000 | 000000 |
24" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0025" to +0.0025" | 1" | 3/32" | Silver | Black | Etched | 00000000 | 000000 |
Heavy Duty Combination Squares
Built for welding and other heavy duty fabricating jobs, these squares have an extra-wide head and a large thumbwheel, so they’re easy to adjust and hold while wearing gloves. They combine the functionality of a try square, miter square, depth gauge, marking gauge, 90° level, and ruler in one tool. Add a clamp to the extra-wide head or use the included leveling tabs to hold material while welding. The tabs can also be used to set workpieces level to one another before fabricating. The fully recessed blade makes it easy to measure around obstacles.
Squares with a cast iron head are durable and resist both scratches and dents. However, they’re more prone to corrosion than squares with zinc heads.
Squares with an aluminum head are lightweight and resist corrosion.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/499/4998n11-@halfx_1708107274.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/499/4998n11p1-@halfx_1708106952.png?ver=imagenotfound)
Blade | Graduation | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Blade Lg. | Front Graduation Marks (Numeric Increments) | Back Graduation Marks (Numeric Increments) | Wd. | Thick. | Material | Color | Color | Mark Style | Flange Thick. | Head Lg. | Each | |
Cast Iron Head | ||||||||||||
Inch | ||||||||||||
12" | 8ths (1"), 16ths (1") | 8ths (1"), 16ths (1") | 1" | 7/64" | Stainless Steel | Gold | Black | Etched | 2" | 5" | 0000000 | 0000000 |
Aluminum Head | ||||||||||||
Inch | ||||||||||||
12" | 8ths (1"), 16ths (1") | 8ths (1"), 16ths (1") | 1" | 7/64" | Stainless Steel | Gold | Black | Etched | 2" | 5" | 0000000 | 000000 |
Scratch-Resistant High-Accuracy Combination Squares
A titanium coating protects the blade against scratches and wear. Use these squares to replace your try square, miter square, depth gauge, height gauge, center-point finder, and level. Blades are labeled with numeric increments that are less than 1" for quick reading. All have wear-resistant etched markings.
Square head checks 90° angles. Center head identifies the center on pipes, rods, and shafts. Protractor head measures angles.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/211/21155a34c2-a01a-digital-master1557343940-p9@halfx_636929227436659795.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/211/21155a34--2132f27663d1592494161-p9@halfx_637280729850759580.png?ver=imagenotfound)
Blade | Graduation | Cast Iron Head | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Blade Lg. | Front Graduation Marks (Numeric Increments) | Back Graduation Marks (Numeric Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Inch | ||||||||||||
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.002" to +0.002" | 1" | 3/32" | Titanium-Coated Steel | Gold | Black | Etched | 4 1/2" | 00000000 | 0000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/211/21155a36c2-a01a-digital-master1557328042-p9@halfx_636929068469251375.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/211/21155a34--2132f27663d1592494161-p9@halfx_637280729850759580.png?ver=imagenotfound)
Blade | Graduation | Cast Iron Heads | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Blade Lg. | Front Graduation Marks (Numeric Increments) | Back Graduation Marks (Numeric Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Inch | ||||||||||||
12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.002" to +0.002" | 1" | 3/32" | Titanium-Coated Steel | Gold | Black | Etched | 4 1/2" | 00000000 | 0000000 |