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57mm diameter dial, clockwise rotation
57mm diameter dial, clockwise rotation, with UKAS calibration certificate
Recalibrate & supply with UKAS calibration certificate
75mm diameter dial, clockwise rotation
75mm diameter dial, clockwise rotation with UKAS calibration certificate
Inch divisions, clockwise rotation
150mm diameter, pack of 100
threaded both ends, plated steelBS1377-4
plated steelBS1377-4