Mitutoyo 468-261 Electronic Inside Micrometer IP65

Product Description

The MITUTOYO 468-261 is a three-point electronic inside micrometer designed for precise internal bore measurement in the range of 0.2750 to 0.3500 inches. It delivers a resolution of 0.00005 inches and an accuracy of 0.00010 inches, making it suitable for high-tolerance inspection work in machining, manufacturing, and mechanical trades. The tool features a titanium nitride finish for durability and impact resistance, a ratchet stop thimble for consistent measuring force, and a large LCD display with 7.5 mm character height for easy readout. Data output capability allows direct connection to statistical process control (SPC) systems or data loggers.

The 468-261 is used in shop floor and quality control environments where accurate internal diameter measurement of small bores is required. Typical applications include inspecting drilled holes, bushings, valve guides, and similar precision components. The IP65 ingress protection rating makes it suitable for use in environments with coolant mist or light fluid exposure, which is common in active machining operations. Licensed metrology technicians, machinists, and quality inspectors are the primary users of this instrument.

Key Features

• Measuring range of 0.2750 to 0.3500 inches with 0.00005 inch resolution
• Accuracy rated at 0.00010 inches for high-tolerance bore inspection
• IP65 ingress protection rated against dust and coolant mist
• Titanium nitride finish provides excellent durability and impact resistance
• Ratchet stop thimble ensures consistent and repeatable measuring force
• Digital data output compatible with SPC systems and data collection hardware
• Large LCD display with 7.5 mm character height for clear readout

Compatibility

Designed as an OEM-style electronic inside micrometer for precision internal bore measurement applications requiring a 0.2750 to 0.3500 inch measurement range.

Installation Notes

This instrument is used by machinists, quality technicians, and metrologists in calibrated measurement environments. Before use, zero the instrument according to the manufacturer calibration procedure and confirm the reference setting standard is within the tool's measurement range. Keep the contact points clean and free of debris prior to measurement. Battery replacement requires an SR44 cell; power down the instrument before replacing the battery.