The Starrett 256.1M Disc-Type Micrometer is used to measure the thickness of work sections such as ribs, lands, fins, cutting edges on form tools, and chordal thickness of gear teeth. Because of their large anvil and spindle faces, the 1" size is also useful for measuring the thickness of sheet materials like paper, cardboard, rubber, and plastics. 0-1" Range, .001" Grad, Non-Rotating Spindle.
This item is no longer available.
The direct replacement is 486P-7.
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[Discontinued 10/2025]