Mitutoyo 155-123 Telescoping Gage 0.75-1.25 Inch Range

The Mitutoyo 155-123 is a precision telescoping gage designed for accurate internal diameter measurements from 0.75 to 1.25 inches. This essential measuring tool is ideal for determining bore diameters, groove widths, and other internal dimensions where direct measurement with calipers or micrometers is impractical.

Key Features:

• Spring-loaded plunger mechanism expands within bores and grooves for reliable contact
• Knurled clamp for secure locking of measurement position
• Measurement range: 0.75 to 1.25 inches
• Transfers internal dimensions for measurement with external micrometers
• Hardened and ground contact points for durability and accuracy

To use, compress the telescoping plunger, insert into the bore, release to allow spring expansion, then lock the clamp when proper contact is achieved. Remove the gage and measure the expanded length with a micrometer for precise internal dimension reading. This gage is also available as part of Mitutoyo set 155-902, which includes multiple size ranges for comprehensive internal measuring capability.