Mitutoyo 155-907 Telescoping Gage Set 4 Piece 0.315 to 2.125 in

Product Description

The MITUTOYO 155-907 is a 4-piece telescoping gage set designed to measure internal bore diameters across a range of 0.315 to 2.125 inches. Each gage uses a spring-loaded plunger that locks in place at the measured diameter, transferring the reading to an outside micrometer for a precise measurement. The set covers a wide span of bore sizes in a single kit, making it a practical choice for machinists, engine builders, and precision maintenance technicians who need accurate inside-diameter data on a regular basis. A fitted storage pouch is included to protect the gages and keep the set organized.

This telescoping gage set is suited for precision measurement work in machine shops, manufacturing facilities, and maintenance environments. It is commonly used to check cylinder bores, bushings, bearing housings, and other internal features where direct contact measurement is required. The 4-piece configuration covers the 0.315 to 2.125 inch range with overlapping gage sizes to ensure full coverage across common bore diameters found in mechanical components.

Key Features

• Measurement range of 0.315 to 2.125 inches across 4 gages
• Spring-loaded, lock-style plunger mechanism for repeatable transfer measurements
• Minimum overall length of 110 mm and maximum overall length of 150 mm for access in tight bores
• 4-piece set provides overlapping coverage across the full measurement range
• Includes a fitted pouch for organized storage and transport of all gages

Compatibility

Designed as a general-purpose telescoping gage set for use with any outside micrometer capable of reading across the 0.315 to 2.125 inch range when taking transfer measurements.

Installation Notes

Telescoping gages are used by precision measurement technicians and machinists and do not require power tools or electrical isolation. Compress and lock the gage at the bore diameter, then measure the locked gage with a calibrated outside micrometer on a flat, stable surface. Handle the contact surfaces carefully to avoid wear that could affect measurement accuracy. Store gages in the included pouch when not in use to prevent damage to the contact ends.