Circumference Rulers
Determine the circumference of a circle without calculations. These rulers have an inch scale for measuring diameter on the top edge and the corresponding circumference scale on the bottom edge. They’re also known as tinners' rules. All are flexible for measuring slightly curved surfaces and have wear-resistant etched markings.
Circumference | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Front Graduation Marks (Numeric Increments) | Measured | Graduation Marks (Numeric Increments) | Wd. | Thick. | Flexibility | Color | Graduation Mark Style | Hole Dia. | Each | |
Inch—Left to Right Reading Direction | |||||||||||
Steel | |||||||||||
| 36" | 16ths (1") | 113" | 8ths (1") | 1 1/4" | 1/16" | Flexible | Silver | Etched | 7/32" | 000000 | 0000000 |
| 48" | 16ths (1") | 150" | 8ths (1") | 1 1/4" | 1/16" | Flexible | Silver | Etched | 7/32" | 000000 | 000000 |
Pocket-Size Diameter Tape Measures
At about half the size of standard diameter tape measures, these fit in your pocket. Wrap them around circular items to measure circumference and determine diameter without the need for calculations. The blade is nonlocking.
Tape measures with a painted-steel blade resist scratches, wear, and corrosion. They also have a loop tip, so you can hang them on a nail and a stud.
Diameter | Blade | Graduation | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Measured | Graduation Marks | Lg. | Graduation Marks | Numeric Marks | Width | Material | Color | Tip Style | Color | Mark Style | Case Material | Each | |
Inch | |||||||||||||
| 1/4"-23" | 100ths | 6 ft. | 32nds (First Foot), 16ths | Diameter Inches, Inches | 1/4" | Painted Steel | Yellow | Loop | Black | Printed | Chrome-Plated Metal | 0000000 | 000000 |
| 1/4"-23" | 64ths | 6 ft. | 32nds (First Foot), 16ths | Diameter Inches, Inches | 1/4" | Painted Steel | Yellow | Loop | Black | Printed | Chrome-Plated Metal | 0000000 | 00000 |
Inch/Metric | |||||||||||||
| 0"-24" | 100ths, Millimeters | 6 ft./2 m | 32nds (First Foot), 16ths, Millimeters | Diameter Inches, Inches, Diameter Centimeters, Centimeters | 1/4" | Enamel-Coated Steel | White | Hook | Black | Printed | Plastic | 00000000 | 00000 |
Metric | |||||||||||||
| 5mm-635mm | Millimeters | 2 m | Millimeters | Diameter Centimeters, Centimeters | 1/4" | Painted Steel | Yellow | Loop | Black | Printed | Chrome-Plated Metal | 0000000 | 00000 |
Diameter Tape Measures
Also known as tree tapes, wrap these tape measures around circular items to determine diameter and measure circumference without the need for calculations. The blade is chrome-plated, vinyl-coated, or painted to resist scratches, wear, and corrosion, and the case is coated for scratch resistance.
Chrome-plated blades are more durable than vinyl-coated blades.
Pointed-hook tip grabs the edge of an object or drives into wood.
Loop tip hangs on a nail or stud.
Dia. | Blade | Graduation | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Measured | Graduation Marks | Lg. | Graduation Marks | Numeric Marks | Width | Material | Color | Tip Style | Color | Mark Style | Each | |
Inch | ||||||||||||
| 2"-76" | 10ths | 20 ft. | 100ths, 10ths | Diameter Inches, Inches, Feet | 3/8" | Chrome-Plated Steel | Silver | Pointed Hook | Black | Printed | 0000000 | 0000000 |
| 2"-76" | Inches | 20 ft. | 16ths | Diameter Inches, Inches | 3/8" | Vinyl-Coated Steel | Black | Loop | Silver | Embossed | 0000000 | 000000 |
Inch/Metric | ||||||||||||
| 0"-45"/0 cm-116 cm | 100ths, Millimeters | 12 ft./3.5 m | 16ths, Millimeters | Diameter Inches, Inches, Diameter Centimeters, Centimeters | 1/2" | Painted Steel | White | Loop | Black and Red | Printed | 0000000 | 00000 |
Diameter Tape Measures with Automatic Retraction
Also known as tree tapes, wrap these tape measures around circular items to measure the circumference and determine the diameter without any calculations. The blade automatically retracts unless it’s looped onto something.
Dia. | Blade | Graduation | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Measured | Graduation Marks | Lg. | Graduation Marks | Numeric Marks | Width | Material | Color | Tip Style | Color | Mark Style | Each | |
Inch | ||||||||||||
| 7"-120" | 10ths | 50 ft. | 8ths | Diameter Inches, Inches, Feet | 3/8" | Nylon-Coated Steel | Yellow | Loop | Black | Printed | 0000000 | 000000 |