Mitutoyo 345-351-30 Electronic Inside Micrometer

Product Description

The MITUTOYO 345-351-30 is a 2-contact electronic inside micrometer designed for precision internal bore and hole measurements. It covers a measurement range of 1.0000 to 2.0000 inches with a resolution of 0.00005 inches and an accuracy of 0.00030 inches. The measuring faces are solid carbide for durability and wear resistance in high-cycle shop environments. A digital data output function allows readings to be sent directly to a data collector or SPC system, making it a practical tool for quality control workflows. Licensed metrologists, machinists, and tool-and-die technicians are the primary users of this instrument.

This inside micrometer is suited for precision measurement tasks in manufacturing, machine shops, and metrology labs. It is commonly used to verify bore diameters, cylinder bores, and machined housings where tight dimensional tolerances must be confirmed. The instrument ships with a plastic case for storage and protection. The satin chrome finish reduces glare and surface reflection during use, which aids readability in lit shop environments.

Key Features

• Measurement range of 1.0000 to 2.0000 inches
• Resolution of 0.00005 inches for high-precision readings
• Accuracy of 0.00030 inches
• Solid carbide measuring faces for long service life
• Digital data output for SPC and quality system integration
• Satin chrome finish reduces glare during measurement
• Includes plastic carrying and storage case

Compatibility

Designed as a standalone precision measurement instrument for internal bore and hole gauging applications requiring a 1.0000 to 2.0000 inch range.

Installation Notes

This instrument requires no installation but should be handled and stored according to standard metrology practices. Before use, zero the micrometer per the manufacturer calibration procedure and verify the battery (SR44 type) is charged. Avoid dropping or subjecting the instrument to impact, which can affect calibration. Periodic calibration against a known standard is recommended to maintain measurement accuracy.