IMTS 2026
Published

Bore Gage Setting Tool Provides Reference Master

Mahr’s Multimar 844 S bore gage setting tool uses gage block combinations and a hand clamping mechanism to set instruments with a gage block stack assembly in a clamp with jaws at both ends to provide an accurate reference master.

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Mahr’s Multimar 844 S bore gage setting tool uses gage block combinations and a hand clamping mechanism to set instruments in either the horizontal or vertical position. According to the company, typically adjustable bore gages are set using micrometers or master rings but micrometers have inherent errors that can be passed along to the gage, and master rings can be expensive, especially if one is required for each of many sizes on the shop floor.

Using a bore setting gage with a gage block stack assembly in a clamp with jaws at both ends provides an accurate reference master, the company says. The rigid base of the bore gage setting tool is made of anodized aluminum for mobile or stationary use, either in the lab or on the production floor. According to the company, three sizes are available, 15.5", 45", and 85.8", along with a wide range of accessories for various gage types.

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IMTS 2026
IMTS 2026
IMTS 2026
IMTS 2026
IMTS 2026
IMTS 2026