Mitutoyo Holtest (Type II) Series 368 Three-Point Internal Micrometer Set, 2pcs, 12-20mm – 368-991

This is an economy version of a three-point internal micrometer, that offers you the following benefits:

• Hardened tool steel anvils and tapers allow a more economically priced and
  affordable tool.
• Individual types without setting rings or extensions.
• The Holtests (type II) have three contact points made of alloyed steel
• Measurement can be taken closer to the bottom of the blind bore
• Can measure deep holes using an Extension Rod (optional)
• 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: 0.005mm or .0002″
• Measuring method: Three-point method
• Contact point: Harden Steel

Optional Accessories:

• 952621: Extension rod 150mm / 5.9″ For range 12-20mm / 0.5 – .8″ models
• 952622: Extension rod 150mm / 5.9″ For range 20-50mm / 0.8 – 2″ models
• 952623: Extension rod 150mm / 5.9″ For range 50-300mm / 2 – 12″ models

Specifications:

See all Mitutoyo Holtest (Type II) Series 368 Three-Point Internal Micrometers