Starrett 67987 Groove Micrometer 0 to 1 Inch Outside

Product Description

The STARRETT 67987 is a mechanical outside groove micrometer designed for precise measurement of groove widths and land widths from 0 to 1 inch. Built with steel anvil and spindle components and finished in satin chrome, this instrument delivers 0.0004 inch accuracy with a 0.001 inch graduation. The 9/32 inch measuring disc diameter allows access into narrow grooves that standard micrometers cannot reach. Machinists, tool-and-die makers, and precision measurement technicians rely on this micrometer for quality control work on grooved shafts, retaining ring seats, and similar features requiring tight dimensional verification.

This groove micrometer is suited for precision measurement tasks in manufacturing, machining, and inspection environments. It handles outside groove and land width measurements where a standard flat-anvil micrometer cannot seat properly. The quick and easy adjustment feature supports efficient use during repetitive measurements or production checks. The 0 to 1 inch range covers the majority of common groove sizes encountered in general machining and mechanical assembly work.

Key Features

• 0 to 1 inch measurement range for outside groove and land width applications
• 0.0004 inch accuracy for high-precision dimensional inspection
• 0.001 inch graduation for clear, direct reading
• 9/32 inch measuring disc diameter enables access into narrow grooves
• Steel anvil and spindle construction for durability and wear resistance
• Satin chrome finish reduces glare and resists corrosion
• Quick and easy adjustment mechanism for efficient use during repeated measurements

Compatibility

Designed as an OEM-style precision instrument for outside groove and land width measurement applications in machining and manufacturing inspection workflows.

Installation Notes

This instrument is intended for use by machinists, quality control technicians, and precision measurement professionals. Prior to use, verify the micrometer is zeroed and calibrated per shop calibration procedures. Keep the measuring faces clean and free of debris to maintain accuracy. Store in the provided case or a protected location to prevent damage to the measuring disc and faces.