Mitutoyo 300400 Micrometer Holder 345 145 Series

Product Description

The MITUTOYO 300400 is a micrometer holder designed to store and protect inside micrometers during transport and on the job. It functions as a holster-style accessory, keeping the instrument secure and readily accessible in a shop or field environment. The satin chrome finish resists corrosion and reduces glare under work lighting. Weighing 0.25 pounds, this holder is a lightweight but practical addition to any precision measurement toolkit. It is used by machinists, metrologists, quality control technicians, and skilled tradespeople who rely on inside micrometers for bore and internal dimension work.

This holder is intended for use with the 345 and 145 Series inside micrometers from MITUTOYO. It is suited for both shop and field applications where instrument protection and organized storage matter. The holster design allows quick access to the micrometer without the need to handle a separate case, making it practical in production environments and during service calls where multiple measurements are taken in sequence.

Key Features

• Holster-style design for secure storage and quick access to inside micrometers
• Satin chrome finish provides corrosion resistance and low-glare surface
• Lightweight at 0.25 pounds for easy carry and portability
• Sold individually, one holder per package
• OEM MITUTOYO accessory engineered for proper fitment with compatible series instruments

Compatibility

Designed for use with MITUTOYO 345 Series and 145 Series inside micrometers, as specified by the manufacturer.

Installation Notes

This holder requires no tools or fasteners for use — simply seat the micrometer into the holster as directed by the instrument documentation. Handle precision measuring instruments with care; avoid dropping or applying lateral force that could affect calibration. Technicians should verify the micrometer is properly seated and secured before transport. Calibration should be checked after any impact event regardless of whether the holder is in use.