SPI 31-476-5 Pitch Master OD, 17 - 10 TPI / 1.5 - 2.5 mm

Features:

• Precision machined and chrome plated caliper and micrometer attachments with precision ground inserts for accurate measurements (sold separately).
• Range, 17 - 10 TPI / 1.5 - 2.5 mm pitch
• Caliper attachments are designed for use with 6" dial or electronic calipers with max. jaw thickness of 0.140"
• Ideal for quick checking threads in the machine shop.
• Furnished with instructions.