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Display Type
Dial
Digital
System of Measurement
Inch
Metric
Export Control Classification Number (ECCN)
EAR99
REACH
Compliant
Not Compliant
RoHS
Compliant
Compliant with Exemptions
Not Compliant
DFARS Specialty Metals
Exempt
Contact Point Diameter
0.118"
3/8"
Contact Point Length
1/16"
0.945"
Contact Point Material
Carbide
Steel
Measuring Increments
0.00002"
0.00005"
0.001 mm
0.002 mm
Base Length
7"
9.055"
10.38"
Base Width
1.54"
2"
4"
Distance Measured
0" to 0.002"
0" to 0.5"
0 mm to 12.7 mm
0 mm to 150 mm
0 mm to 250 mm
0 mm to 450 mm
Base Height
0.787"
3"
Base Material
Granite
Steel
Manufacturer
Mitutoyo
Starrett
Manufacturer Model Number
311-215
311-225
311-245
81320
81321
81850
Component
Flatness Gauge
Flatness Gauge with Indicator
Optical Flats
Optical Parallels
Thickness
0.5"
0.5062"
0.5125"
0.5187"
0.6"
1"
1.0062"
1.0125"
1.0187"
12 mm
12.12 mm
12.25 mm
12.37 mm
For Outside Micrometer Size
0" to 1"
1" to 2"
0 mm to 25 mm
Diameter
1
3/16"
1
13/16"
2
3/8"
Squareness Tolerance
0.003 mm
0.006 mm
0.009 mm
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15 Products
Measuring and Inspecting
Flatness Gauges
Determine if the flatness of surface plates, lapping plates, and other surfaces is within tolerance
3 products
Micrometer Check Gauges
Confirm your outside or depth micrometers are accurate
5 products
Squareness Gauges
Check frames and machined parts to see if they are leaning or uneven
3 products
Containers, Storage, and Furniture
Flatness Gauge Cases
Specially fitted to store and transport flatness gauges
1 product
The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)