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Disc Type Micrometers (Starrett)
- Starrett Series 256, with ratchet stop and lock nut
- Thin, tapered anvil and spindle discs, 1/2-inch diameter, 1/16 inch at the center, and tapering to .015-inch edge thickness
- Enters narrow grooves, slots and recesses, making possible the measurement of sections, such as ribs, lands, fins, cutting edges on form tools and chordal thickness of gear teeth...
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