BS 870:1950
Date published:
Specification for external micrometers
External micrometers with fixed anvils having measuring ranges of 0 to ½ in and 0 to 13 mm, and 1 in and 25 mm up to maximum sizes of 24 in and 600 mm respectively. Includes external micrometer with interchangeable anvils for alternative measurement ranges. Material, design of frame, micrometer screw, spindle, thimble and barrel, adjustments, measuring faces, accuracy, packing and marking; setting gauges (material, general design, accuracy); test methods appended.
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BS 870:1950
Get this standard
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