Spi 14-123-4 Telescoping Gage Set 4 Piece 5/16-2-1/8 in

Product Description

The SPI 14-123-4 is a 4-piece telescoping gage set designed to transfer internal bore, hole, and slot dimensions to an outside micrometer for precise measurement. Built from hardened tool steel with a satin chrome finish, these gages resist wear and corrosion in shop environments. The set covers a measurement range of 5/16 inch to 2-1/8 inches, with individual gage overall lengths spanning 4.2 inches to 5.85 inches. The spring-loaded, friction-locking plungers allow technicians to lock the gage at the measured dimension before withdrawal and transfer. A vinyl pouch is included for organized storage and transport.

This telescoping gage set is suited for use in machine shops, maintenance facilities, and precision trades where accurate internal measurement of bores, cylinders, and housings is required. HVAC technicians, machinists, and maintenance mechanics use telescoping gages when checking worn bearing bores, valve seats, and housing fits. The 4-piece set provides coverage across the most common small-to-mid bore sizes encountered in general trade and light industrial work.

Key Features

• Measurement range from 5/16 inch to 2-1/8 inches across 4 gages
• Hardened tool steel construction for long-term durability in shop use
• Satin chrome finish reduces glare and resists corrosion
• Spring-loaded plungers with friction-lock mechanism for accurate dimension transfer
• Overall gage lengths from 4.2 inches to 5.85 inches for reach into recessed bores
• Includes vinyl pouch for organized storage of all 4 pieces

Compatibility

Designed as a general-purpose telescoping gage set compatible with standard outside micrometers for internal dimension transfer measurement across small-to-mid bore applications.

Installation Notes

Telescoping gages are used by machinists, mechanics, and trade technicians and require no installation. To take an accurate measurement, compress the plungers, insert the gage into the bore at a slight angle, lock the plungers, then withdraw and measure across the contact points with a calibrated outside micrometer. Keep contact points clean and free of debris before use to avoid measurement error. Store in the included vinyl pouch to protect contact surfaces.