Mitutoyo 209-935 Inside Dial Caliper Gage Ball Contact

Product Description

The MITUTOYO 209-935 is an inside dial caliper gage designed for precise internal measurement in demanding shop and field environments. It features ball contact points and delivers an accuracy of 0.0008 inches (0.0150 mm), making it suitable for measuring grooves, bores, and other internal features where tight tolerances matter. With a measuring depth of 1.37 inches (35.00 mm), the gage reaches into recessed areas that standard calipers cannot access. It is used by machinists, quality control technicians, and precision measurement professionals who require repeatable, reliable readings on small internal dimensions.

This gage is built for applications where groove or bore geometry must be verified to close tolerances. The ball contact point design allows the gage to seat accurately inside narrow grooves as small as 0.032 inches wide and up to 0.09 inches deep. It is well suited for inspection tasks in manufacturing, tooling, and general precision metrology work. The compact form factor and dial readout make it practical for use at the machine or on the inspection bench.

Key Features

• Accuracy of 0.0008 inches (0.0150 mm) for high-precision internal measurement
• Ball contact point type for accurate seating in grooves and bores
• Measuring depth of 1.37 inches (35.00 mm) for reach into recessed features
• Groove width capacity of 0.032 inches accommodates narrow internal profiles
• Groove depth rating of 0.09 inches for shallow groove inspection
• Tip diameter of 0.60 inches provides stable contact surface

Compatibility

Designed as a precision inside measurement gage suitable for general groove and bore inspection applications in machine shop and quality control environments.

Installation Notes

This gage is a handheld measurement instrument and does not require installation in the traditional sense. Before use, verify the gage is zeroed per the manufacturer calibration procedure. Keep contact points clean and free of debris to maintain measurement accuracy. Store in the provided case when not in use to protect the dial mechanism and contact tips from damage.