Starrett Telescoping Bore Gauges
Spring tension forces two telescoping steel contacts to expand inside the bore; turn the screw to lock the contacts. To find the bore diameter, use a micrometer to measure the distance across the contacts.
Measuring Range | Max. Dp. Measured | Material | Handle Lg. | Manufacturer Model Number | Each | |
2 1/8"-3 1/2" | 2" | Steel | 2 7/8" | 579E | 000000 | 000000 |