Features:
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° apart, contact the internal wall surfaces and find true alignment with the axis of the bore for accurate ID measurement.
- TiN-coated measuring contact points (over 6mm 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 the 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 6mm measuring range
- With Ratchet Stop for constant force
- Setting Rings for zero point adjustment are optional
- Supplied in plastic case up for models up to 100mm. over 100mm models are supplied in wooden case.