PITCHMASTER

• 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.
• The O.D. Caliper attachment set includes 4 pairs of O.D. inserts for measuring 60 external threads from 42 to 6.5 TPI and 0,6 mm to 4,0 mm pitch.
• The O.D. Micrometer attachment set includes 4 pairs of O.D. inserts to measure 60 external threads from 42 to 6.5 TPI, and 60 external metric threads from 0,6 mm to 4,0 mm pitch with a Micrometer with 1/4″ dia. spindle
• Ideal for quick checking threads in the machine shop.
• Furnished with instructions.

PITCHMASTER Sets:

Part No. Description 31-470-8 I.D. and O.D. Attachments & Inserts for Calipers 31-471-6 I.D. Attachment & Inserts for Calipers 31-472-4 O.D. Attachment & Inserts for Calipers 31-473-2 O.D. Attachments & Inserts for Micrometers

O.D. Insert Pairs:

Part No. Description 31-474-0 42 – 25 TPI / 0,6 – 1,0 mm Pitch 31-475-7 25 – 17 TPI / 1,0 – 1,5 mm Pitch 31-476-5 17 – 10 TPI / 1,5 – 2,5 mm Pitch 31-477-3 10 – 6,5TPI / 2,5 – 4,0 mm Pitch

I.D. Insert Pairs:

Part No. Description 31-478-1 42 – 25 TPI / 0,6 – 1,0 mm Pitch 31-479-9 25 – 17 TPI / 1,0 – 1,5 mm Pitch 31-481-5 17 – 10 TPI / 1,5 – 2,5 mm Pitch 31-482-3 10 – 6,5TPI / 2,5 – 4,0 mm Pitch

Attachments Only (in Pairs):

Part No. Description 31-483-1 Micrometer Attachment for 1/4″ Anvil 31-484-9 Micrometer Attachment for 0.257″ Anvil