Details

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The Starrett 231 & 231M Micrometer features 0-1'' range, ratchet stop, lock nut, and carbide face. 0-25mm Range, 0.001mm Grad, Carbide Faces, Ratchet Stop, Lock Nut.

Note:
This item is discontinued. 

Specifications

• Made in America: Yes
• Micrometer Type: Outside
• Range (mm): 0-25mm
• Graduations (mm): 0.001mm
• Anvil/Spindle Material: Carbide
• Anvil Type: Flat
• Spindle Type: Flat
• Lock Nut Type: Knurled Ring Type
• Thimble Type: Ratchet
• Accuracy (mm): +/-.002mm

Features

• This is a slightly heavier micrometer with thermal insulators mounted on the frame front and rear
• Advanced sleeve design with staggered lines and distinct figures for precise and easy readability
• Balanced frame and thimble design ensure easy handling and better readability
• Gracefully designed tapered frame for use in narrow slots and tight places
• Quick and easy adjustment
• Quick-reading figures
• Carbide Measuring Faces
• Ratchet Stop
• Lock Nut
• Micro-lapped measuring faces
• Starrett satin chrome finish – no glare – resists rust
• Ring-type knurled lock nut for quick and sure locking
• The anvil and spindle are sized at .250'' (6.35mm)
• Rigid one-piece frame of drop forged steel
• Extremely hard and stable one-piece spindle
• A combination ratchet and speeder for uniform pressure and quicker adjustment on all sizes