Mitutoyo 155-124 Telescoping Gage 1-1/4 to 2-1/8 in

Product Description

The MITUTOYO 155-124 is a telescoping gage designed to measure internal bore diameters and internal dimensions in a range from 1-1/4 to 2-1/8 inches. The tool features a satin chrome finish and an overall length of 5.9055 inches. Telescoping gages are transfer-type measuring instruments — the technician locks the spring-loaded contact points at the measured dimension and reads the result with an outside micrometer. The 155-124 is a standard hand tool used by machinists, maintenance technicians, and quality control personnel in precision measurement work.

This gage is suited for measuring cylinder bores, bushing bores, bearing housings, and similar internal features in maintenance, repair, and manufacturing environments. The measurement range of 1-1/4 to 2-1/8 inches makes it appropriate for mid-size bores encountered in general machining, engine rebuilding, pump service, and mechanical assembly work. It is a single-piece, handheld instrument requiring no power source.

Key Features

• Measurement range: 1-1/4 to 2-1/8 inches (maximum measurement 2.13 inches)
• Overall length: 5.9055 inches for reach into blind bores and recessed features
• Satin chrome finish resists corrosion and reduces glare during use
• Spring-loaded telescoping contacts lock at measured position for transfer to a micrometer
• Compact and lightweight at 0.1 pounds for fatigue-free single-hand operation

Compatibility

Designed as a standard telescoping gage for use with any outside micrometer capable of reading in the 1-1/4 to 2-1/8 inch range. No dedicated mating instrument is required beyond a calibrated outside micrometer.

Installation Notes

No installation is required for this handheld measuring instrument. Technicians should verify the locking mechanism moves freely and that contact points are free of burrs or wear before use. Handle with clean, dry hands or cotton gloves to prevent measurement error from thermal expansion. Store in a protective case away from other tools to preserve contact point condition and finish.