Mitutoyo 155-904 Telescoping Gage Set 1/2 to 6 in 5 Pc

Product Description

The MITUTOYO 155-904 is a 5-piece telescoping gage set covering an internal measurement range of 1/2 inch to 6 inches. Telescoping gages are used to transfer bore, hole, and slot dimensions to an outside micrometer for precise measurement. Each gage features a spring-loaded, friction-locking plunger that locks the telescoping contact in place once the correct dimension is captured. The set is constructed from stainless steel with a satin chrome finish, providing corrosion resistance and durability in shop environments. Machinists, toolmakers, and quality technicians rely on this style of set for checking inside diameters across a wide range of workpiece sizes.

This set is suited for use in machine shops, maintenance facilities, and manufacturing environments where accurate inside diameter measurement is required. The 5-piece configuration spans 1/2 inch to 6 inches, making it practical for a broad range of bore and slot sizes encountered in general machining and inspection work. The included pouch keeps the individual gages organized and protected from surface damage when not in use.

Key Features

• Measurement range of 1/2 inch to 6 inches covered across 5 gages
• Stainless steel construction for corrosion resistance and long service life
• Satin chrome finish reduces glare and surface wear
• Spring-loaded telescoping contacts lock at the measured dimension for transfer to a micrometer
• Includes a storage pouch to protect gages and keep the set organized

Compatibility

Designed as an OEM-style telescoping gage set for general inside diameter measurement applications where a transfer-style gage and outside micrometer are used together.

Installation Notes

Telescoping gages are hand tools requiring no installation. Before use, ensure the locking mechanism operates smoothly and contact surfaces are clean and free of burrs or debris. When transferring a measurement, seat the gage squarely in the bore at the correct depth before locking to avoid cocking errors. Pair with a calibrated outside micrometer of appropriate range for accurate readings.