Mitutoyo Three/Two-Point Internal Holtest Micrometer, Series 368, 7" - 8" - 368-277
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.
Features:
TiN-coated measuring contact points(over 6mm/.275" 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 6mm (.275") measuring range
With Ratchet Stop for constant force
Setting Rings for zero point adjustment are optional
Supplied in fitted plastic case up to 100mm / 4”. Over 100mm / 4” supplied in wooden case
Technical Data:
Graduation: 0.001mm, 0.005mm*,
.0001" or .0002"* (*over 12mm or .5” models)
