Description

The MITUTOYO 123-126 is a mechanical disc micrometer designed for precision outside measurement of disc-shaped or thin-edged workpieces where a standard flat anvil cannot make reliable contact. The measuring range spans 1 to 2 inches with a graduation of 0.001 inch and a resolution of 0.00005 inch, delivering an accuracy of 0.0002 inch. A ratchet stop thimble controls measuring force for consistent, repeatable readings. The satin chrome finish reduces glare and resists corrosion in shop environments. This tool is suited for metrology technicians, machinists, and quality control personnel working with thin parts such as saw blades, disc springs, and sheet stock.

The 123-126 is used in precision measurement applications where standard micrometer anvils cannot properly seat on a thin or disc-shaped part. The 20 mm disc anvil with a 0.70 mm edge thickness allows contact on narrow surfaces that would otherwise be inaccessible. The rotating spindle and data output capability make this unit compatible with SPC data collection systems. It is applicable in manufacturing, tool and die, and quality assurance settings where tight tolerances must be verified on disc-profile components.

Key Features

Measuring range: 1 to 2 inches with 0.001 inch graduation and 0.0002 inch accuracy
20 mm disc anvil with 0.70 mm edge thickness for contact on thin and narrow workpieces
Ratchet stop thimble ensures consistent measuring force and repeatable results
Rotating spindle with data output port for SPC or digital readout integration
IP65-rated water and dust resistance for use in wet or coolant-present environments
Satin chrome finish on steel anvil and spindle for corrosion resistance and reduced glare
Includes plastic carrying case and one SR44 battery

Compatibility

Designed as a precision measurement instrument for outside measurement of disc-profile and thin-edged workpieces in the 1 to 2 inch range. Compatible with standard SPC data collection interfaces via the built-in data output port.

Installation Notes

This instrument is used by metrology technicians and machinists and requires no installation in a mechanical system. Before use, verify the micrometer is zeroed at the 1 inch reference point using the appropriate standard. Handle with clean, dry hands or cotton gloves to prevent corrosion from skin oils on precision surfaces. Store in the included plastic case when not in use to protect the disc anvil and spindle from damage.