Starrett 68127 Mechanical Inside Micrometer 0.2 in

Product Description

The STARRETT 68127 is a mechanical inside micrometer designed for precise internal bore and hole measurements. It features a ratchet stop thimble that delivers consistent measuring pressure, reducing operator error and improving repeatability. With a 0.2 inch measuring range, 0.0001 inch graduation, and 0.0001 inch accuracy, this tool meets the demands of tight-tolerance work in tool rooms, machine shops, and maintenance environments. Measuring faces are solid carbide for durability and resistance to wear. A licensed mechanic, machinist, or precision measurement technician is the typical user for this instrument.

The 68127 is suited for measuring internal diameters in residential and commercial maintenance, manufacturing quality control, and precision machining applications. The self-centering two-point contact design promotes true readings without requiring manual alignment correction. The included extension rods extend reach up to 6 inches, allowing measurement of deeper bores. A setting ring with a 0.16 inch diameter is included for calibration reference. This micrometer ships with a protective case, contacts, instructions, setting ring, and wrenches.

Key Features

• 0.0001 inch graduation and 0.0001 inch accuracy for tight-tolerance measurement
• Solid carbide measuring faces resist wear during repeated use
• Ratchet stop thimble ensures consistent measuring pressure across readings
• Self-centering contacts promote true internal diameter readings
• Maximum extension rod length of 6 inches for deep bore reach
• Includes case, contacts, setting ring, wrenches, and instructions

Compatibility

Designed as a mechanical inside micrometer for use in precision measurement applications requiring internal bore gauging with a 0.2 inch range and 0.0001 inch resolution.

Installation Notes

Inside micrometers are installed and used by machinists, tool and die makers, and precision measurement technicians. Before use, calibrate the instrument against the included setting ring and verify zero. Handle carbide measuring faces with care to avoid chipping, and store the tool in its protective case when not in use. Do not use this instrument on rotating workpieces.