Starrett Depth Micrometers
Measure the depth of holes, slots, shoulders, and projections by changing out the steel extension rods supplied in 1" incremental lengths. The thimble has a constant-force mechanism, so that once the spindle contacts the surface of the measured object, it will stop tightening. This ensures repeatable measurements and prevents over-tightening.
For technical drawings and 3-D models, click on a part number.
Base | Extension Rods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Measuring Range | Accuracy | Measuring Increments | Wd. | Lg. | Material | No. of | Lg. | Dia. | Overall Ht. | Manufacturer Model No. | Each | |
Ratchet Thimble | ||||||||||||
| 0"-3" | ±0.0001" | 0.001" | 4" | 39/64" | Steel | 3 | 1", 2", 3" | 5/32" | 3 1/2" | 445BZ-3RL | 0000000 | 0000000 |
Starrett Depth Micrometers with Calibration Certificate
These micrometers come with a calibration certificate traceable to NIST that states they've passed a test for accuracy. Change out the steel extension rods supplied in 1" incremental lengths to measure the depth of holes, slots, shoulders, and projections. The thimble has a constant-force mechanism, so that once the spindle contacts the surface of the measured object, it will stop tightening. This ensures repeatable measurements and prevents over-tightening.
For technical drawings and 3-D models, click on a part number.
Base | Extension Rods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Measuring Range | Accuracy | Measuring Increments | Wd. | Lg. | Material | No. of | Lg. | Dia. | Overall Ht. | Manufacturer Model No. | Each | |
Ratchet Thimble | ||||||||||||
| 0"-3" | ±0.0001" | 0.001" | 4" | 39/64" | Steel | 3 | 1", 2", 3" | 5/32" | 3 1/2" | 445BZ-3RL | 0000000 | 0000000 |