Starrett 1175Z Dial Indicator Internal Groove Gage .375-6" Range .0005" Graduation

The Starrett 1175Z Dial Indicator Groove Gage is a precision measurement tool designed for in-process and bench inspection of internal grooves and recesses. It is ideal for measuring oil grooves, snap ring retainer grooves, O-ring seat retainer grooves, and similar internal features. The gage is also well-suited for checking bore dimensions and detecting taper, bell-mouth, and out-of-roundness conditions.

Key Features:

• Total diameter range of .375" to 6", adjustable via a range adjusting bar
• Dial indicator graduated in .0005" with a +30/-30 dial reading and .060" total measurement range
• Movable upper gaging contact features a 1/2" (12.7mm) retractable range and transfers measurement through a linear, friction-free mechanism to the dial indicator
• Fixed lower reference jaw supports the full weight of the gage and operator's hands, eliminating incorrect gaging pressure and false readings
• Reference jaw mounts in two positions on the adjustable range bar for greater flexibility
• Fine adjustment screw and lock included for precise setup
• Includes two sets of jaws providing gaging depths of 1.25" and 2.50"
• Includes three sets of interchangeable contacts (Styles 1-10, 2-10, and 2-20) covering groove depths of .100"–.265" and groove widths of .024"–.051"
• Contacts feature flush ends for gaging grooves at the bottom of blind holes
• Contacts are hardened steel with a hard chrome finish for long service life
• Gage can be set using gage blocks, micrometers, vernier calipers, or ring gages
• Comes complete with 81-136-622J dial indicator in a protective carrying case

Special accessories available by request include jaws for 4" and 6" gaging depths, a 6"–12" diameter range extension bar, and dial indicators graduated in .001". The Starrett 1175Z is a reliable choice for machinists and quality control professionals requiring accurate, repeatable groove measurement.