Starrett 52611 Telescoping Gage 1/2 to 3/4 in

Product Description

The STARRETT 52611 is a telescoping gage designed to measure inside diameters, bores, and slot widths in the 1/2 to 3/4 inch range. The telescoping contact arms spring outward to contact the bore walls, then lock in place so the measurement can be transferred to an outside micrometer or caliper for reading. At 4.2 inches in overall length with a 2-3/8 inch handle, it is compact enough for tight clearances. The satin chrome finish reduces glare and resists corrosion during regular shop use. Machinists, pipefitters, and HVAC or plumbing technicians rely on telescoping gages when a direct-reading bore gage is not required.

The STARRETT 52611 is suited for residential and light commercial maintenance applications where inside bore and hole dimensions must be verified quickly. Typical scenarios include checking pipe bore sizes, valve seat diameters, cylinder bores, and fittings during installation or service work. The compact handle length makes it practical in confined spaces such as equipment cabinets or inline pipe assemblies where longer tools cannot reach.

Key Features

• Measuring range of 1/2 to 3/4 inch covers common bore and fitting sizes
• Spring-loaded telescoping arms expand to contact bore walls and lock for transfer measurement
li>Overall length of 4.2 inches with a 2-3/8 inch handle suits confined-space access
• Satin chrome finish reduces glare and provides corrosion resistance
• Lightweight at 0.063 pounds for easy one-hand use

Compatibility

Designed as a general-purpose inside measuring gage for use with any outside micrometer or caliper capable of reading in the 1/2 to 3/4 inch range.

Installation Notes

Telescoping gages are a measurement instrument, not an installed component. Before measuring, ensure the bore or fitting is clean and free of burrs that could affect contact. Lock the telescoping arms against the bore walls before withdrawing the gage, then transfer the measurement to a calibrated micrometer or caliper on a flat surface. Do not overtighten the locking knob, as this can distort the contact arms and affect accuracy.