Micrometer Check Gauges
Check for out-of-parallel anvils and determine wear on micrometers. This gauge has nine steps that measure from 0.140” to 0.964”. It comes with a certificate of calibration traceable to NIST that states it has passed a test for accuracy.
| For Outside Micrometer Size | Measuring Sizes | Accuracy | Lg. | Material | Container Type | Each | |
| 1" | 0.140", 0.243", 0.346", 0.449", 0.552", 0.655", 0.758", 0.861", 0.964" | ±0.0001" | 2 13/16" | Steel | Case | 0000000 | 0000000 |
Depth Micrometer Check Gauges
Confirm your depth micrometer is accurate. These gauges check if your micrometer starts measuring at zero. With six highly accurate reference depth points that range from 1″ to 6″, you can check the accuracy of your depth micrometer and adjust if it comes out of calibration over time. Twist the micrometer's spindle until the tip of the rod is touching the surface of the gauge block and check the reading. Once zeroed, your depth micrometer is ready to measure your parts.
| For Depth Micrometer Size | No. of Steps | Measuring Sizes | Accuracy | Wd. | Ht. | Dp. | Material | Container Type | Each | |
| 6" | 6 | 1", 2", 3", 4", 5", 6" | ±0.00001" | 2 13/16" | 7 1/2" | 2 13/16" | Steel | Case | 000000 | 000000000 |
Optical Parallels and Flats for Micrometers
Inspect micrometer spindle and anvil tips to identify whether they're worn or out of parallel. These discs help you keep your micrometer measuring accurately, especially after repeatedly measuring hard items such as ball bearings. Place them between the anvil and spindle and look at the resulting light pattern on the glass.
Optical parallels determine if your anvil and spindle are parallel. You’ll know your micrometer is out of parallel if the spindle side reflects a different number of lines than the anvil side. Each parallel includes four discs to check each quarter-turn of your spindle and identify where it has worn down.
Optical flats determine if your anvil is no longer flat. If the lines you see are curved, your anvil is worn.
| For Outside Micrometer Size | Dia. | Thick. | Flatness Tolerance | Parallel Tolerance | Number of Parallels Included | Container Type | Each | |
| 0" to 1" | 1 3/16" | 0.5", 0.5062", 0.5125", 0.5187" | 0.000004" | 0.000008" | 4 | Case | 0000000 | 0000000 |
| 1" to 2" | 1 3/16" | 1", 1.0062", 1.0125", 1.0187" | 0.000004" | 0.000008" | 4 | Case | 0000000 | 00000000 |
| 0mm to 25mm | 1 3/16" | 12mm, 12.12mm, 12.25mm, 12.37mm | 0.000004" | 0.000008" | 4 | Case | 0000000 | 000000 |
