Screw Thread Comparator Micrometers on S-T Industries, Inc.


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	Screw Thread Comparator Micrometers
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	larger image		The thread micrometer is designed for rapid checking of screw threads. While this micrometer does not measure the exact diameter of a V-thread, it does indicate through comparison whether screw threads are being accurately cut or chased. Contacting tapered points are ground and lapped flat to .015". This permits accurate thread comparison without point ride. Meets or exceeds government specification GGG-C-105c for accuracy. 60° conical spindle and anvil Lock nut and ratchet stop standard Spindle hardened to Rc 62-64 with lead error held to .00005" Silver mist chrome finish head Durable black wrinkle finish frame Black lines & numbers for easy reading 0-1" includes plastic case Fitted wood case available