Holtest SERIES 368 — Three-point/Two-point Internal Micrometers

• Titanium-coated measuring pins on the threepoint type (over 6mm range models) provide excellent durability and impact resistance and allow the instrument to measure right to the bottom of a blind hole.
• Three-point bore micrometer with measuring range 6mm or longer allows stable measurement through automatic centering.
• Can measure deep holes using an Extension rod (optional) which is available on models over 6mm (.275") measuring range.
• Ratchet Stop ensures constant-force, repeatable measurement.
• Setting Rings for accurately setting the instrument are optional.