- Type: 2-Point/3-Point Non-Digital
- Series: 368
- Specifications: 20 to 50 mm Range 0.001 mm Graduations, 0.002 mm Accuracy
These Holtests are versatile, self-centering three-point internal micrometers for the accurate and efficient direct-measurement of internal diameters. Three anvils, evenly spaced at 120 deg apart, contact the internal wall surfaces and find true alignment with the axis of the bore for accurate ID measurement.
- Includes
- Item Features
(2) Setting Rings, Extension and Case
- TiN coated measuring contact points (over 6 mm/0.275 in range models) provide excellent durability and impact resistance and allow the instrument to measure right to the bottom of a blind hole
- Highly durable because of carbide tipped contact points (anvils)
- Measurement can be taken closer to the bottom of the blind bore
- Can measure deep holes using an extension rod (optional) which is available on models over 6 mm (0.275 in) measuring range
- With ratchet stop for constant force
- Setting Rings for zero point adjustment are optional
- Supplied in fitted plastic case up to 100 mm/4 in, over 100 mm/4 in supplied in wooden case