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Screw Thread Gauge | Metric and SAE | Recommends Drill Bit & Tap Size (BCP675): Amazon.com: Industrial & Scientific
Real Instruments Aluminum Micrometer Screw Gauge SS 0-25mm, MM-02
A screw gauge has least count of 0.01mm and there are 50 divisions in its circular scale. - YouTube
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Eisco Micrometer Screw Gauge Micrometer Screw Gauge; Size: 0 to 25 mm x | Fisher Scientific