PITCHMASTER Set, I.D. Attachment Inserts for Calipers – 31-471-6

• Precision machined and chrome plated caliper and micrometer attachments with precision ground inserts for accurate measurements (sold separately)
• Caliper attachments are designed for use with 6″ dial or electronic calipers with max. jaw thickness of 0.140″
• The I.D. Caliper attachment set includes 4 pairs of I.D. inserts to measure threads from 42 to 6.5 TPI with a minimum 58″ minor internal diameter, and all 60 metric internal threads with a minimum 16 mm minor diameter and a pitch from 0,6 mm to 4,0 mm.
• Ideal for quick checking threads in the machine shop.
• Furnished with instructions.

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