Mitutoyo 3-Point Internal Micrometer Holtest 40-50mm 368-769 Trimos This is a Digimatic caliper

This is a Digimatic caliper with nib-style jaws that lets you measure inside dimensions

Standard: JIS B 7725

non-digital Mitutoyo micrometer with a ratchet stop to guarantee repeatable measurement

Anti-magnetic

Mitutoyo 3-Point Internal Micrometer Holtest 40-50mm 368-769 Trimos This is a Digimatic caliperMitutoyo; 3 Point Internal Micrometer Holetest (Type II) Three Point Bore Micrometer Hardened tool steel anvils (instead of titanium coated carbide) allow a more economically priced tool. Same accuracy as the titanium coated models Constant force device allows repeatable measurements Measurements can be made close to the bottom of a blind hole Can measure deep holes using an extension rod (optional accessory) Optional setting rings available optional.