Thread gauge 781 AccuBore®

Overview
Starrett pistol-grip and micrometer-style electronic thread gages deliver exact internal thread diameter measurements and replace conventional go/no-go checks for more informative inspection. Models referenced on this page (notably 770 and 781) cover applications in tapping and thread milling and support faster, data-driven decisions in thread production.

Applications
Thread Milling Applications
Electronic thread gages (models referenced on this page include 770 and 781) provide precise internal thread diameter values for thread milling operations, allowing the machinist to determine the exact amount of material to remove. This enables larger material removal during roughing passes when the required material removal is quantified.

Featured products on this page

• 781 AccuBore® — 781 AccuBore® pistol-grip electronic bore/thread gages (with output) highlighted on this page.
• Electronic Pistol Grip Thread Gages — Provide one-hand operation, repeatability and simplified handling.
• Electronic Thread Gage Micrometers — Allow access to confined or deep cavities; suited to experienced users of ratchet-style precision tools.
• Thread Gage Accessories — Interchangeable contact heads, data output cables, setting/verification rings and related items.

Related information

• 284 Acme Screw Thread Gage
• Long Standout Pocket Tapes
• Starrett Product Details (general)

Specifications / Technical data

• Product types: Pistol-grip electronic thread gages, micrometer-style electronic thread gages, mechanical thread gage accessories.
• Representative models mentioned: 770 (electronic internal micrometer style), 781 (AccuBore® pistol-grip electronic bore/thread gage).
• Measurement function: Exact internal thread diameter measurement; provides informative alternative to go/no-go inspection.
• Data & output: Electronic models include data output capability and compatibility with data cables for SPC and recordkeeping.
• Accessories: Interchangeable contact heads, setting/verification rings, data output cables.
• Usage: Suited for thread milling and tapping workflows; supports faster material removal decisions and improved process efficiency.
• Ergonomics: Pistol-grip models enable one-hand operation; micrometer-style models allow access to tight or deep areas.