Starrett 68053 Mechanical Outside Micrometer 0.01 in Graduation

Product Description

The STARRETT 68053 is a mechanical outside micrometer designed for precise external dimensional measurement in machine shops, fabrication environments, and field service applications. It features a ratchet stop thimble that delivers consistent measuring pressure, helping technicians achieve repeatable readings. Graduations are marked at 0.01 inches, with an accuracy of 0.002 mm. The measuring faces are solid carbide, providing resistance to wear on hardened or abrasive workpieces. The satin chrome finish reduces glare for easier reading under shop lighting. This tool is suited for machinists, pipefitters, HVAC fabricators, and maintenance professionals who require reliable dimensional verification during installation or inspection work.

The STARRETT 68053 is used wherever accurate outside diameter or thickness measurements are required on metal components, pipe stock, tubing, or machined parts. It is appropriate for light industrial, commercial mechanical, and trade service settings. The ratchet stop thimble makes it well suited for technicians who take frequent, repetitive measurements, since the mechanism limits applied force and prevents over-tightening against the workpiece.

Key Features

• Graduation of 0.01 inches for precise outside dimensional readings
• Ratchet stop thimble ensures consistent, repeatable measuring pressure
• Solid carbide measuring faces resist wear against hardened workpiece materials
• Satin chrome finish reduces glare and corrosion on the frame and thimble
• Mechanical analog readout with no battery or digital counter required
• Starrett reference number 436.1MXRL-50

Compatibility

Designed as a standard mechanical outside micrometer for general-purpose outside dimensional measurement in trade and light industrial applications.

Installation Notes

Outside micrometers are calibrated instruments and should be handled by qualified machinists or trade technicians familiar with proper measuring technique. Store the tool with the measuring faces slightly open to prevent thermal expansion damage. Clean measuring faces before and after use to maintain accuracy. Do not use the ratchet stop as a clamp or apply excessive force beyond the designed contact pressure.