Go Ring Gauges | McMaster-Carr

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389 Products

Size Checking

Ring Gauges for Outside Diameters

Ring Gauges for Outside Diameters

Use these gauges to check the outside diameter of shafts, rods, and other cylindrical objects to determine whether they’re in tolerance.

Threaded Ring Gauges with Calibration Certificate

Threaded Ring Gauges with Calibration Certificate

Not only were these gauges calibrated in a lab, but they also come with a certificate that's traceable to NIST.

Threaded Ring Gauges

Threaded Ring Gauges

Check a part’s external threads to make sure they fall within tolerance. You can use these for bolts, threaded rods, bits, and more.

Threaded Ring Gauges for Pipe Threads

Threaded Ring Gauges for Pipe Threads

Confirm that external pipe threads are sized within tolerance.

Left-Hand Threaded Ring Gauges
with Calibration Certificate

Left-Hand Threaded Ring Gauges with Calibration Certificate

Calibrated in a lab and backed by a certificate traceable to NIST, these gauges check if left-hand threads fall within tolerance.

Left-Hand Threaded Ring Gauges

Left-Hand Threaded Ring Gauges

Test if the left-hand threads on parts fall within tolerance.

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)