Importance

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Abstract

An improved dial bore gage having an adjustment mechanism associated therewith for adjusting the relative axial positions of the probe and dial portions of the gage, the adjustment mechanism including a first member operatively connected to the dial portion of the gage having a first threaded portion associated therewith of a predetermined thread pitch, a second member operatively connected to the probe portion of the gage having a second threaded portion associated therewith of a different predetermined thread pitch, and an adjustment member rotatably mounted to the first and second members, the adjustment member having spaced threaded portions to correspond to and mate with the threaded portions on the first and second members whereby rotation of the adjustment member will produce relative axial movement between the first and second members and this in turn will produce changes in the gage setting for each position thereof. The present dial bore gage also includes a mechanism for releasing pressure on the gaging contacts of the gate to facilitate movement into and out of a bore to be gaged and mechanisms for providing both axial and angular backlash compensation between the probe and dial portions of the gage.

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First Claim