American Machinist

Moving forward with measurement. (50 Years Ago In ... American Machinist).

MEASURING WAS ON THE MINDS OF EDITORS IN JULY 1953. They reported two new developments--the use of electronic gaging in the gearmaking industry, and a new "unusually precise" goniometer.

At the latest AGMA meeting, manufacturers discussed how tolerances of [+ or -] 0.0001 in. were too fight for measurement with dial-in-indicator instruments and shared experiences of switching to new electronic gaging units to help increase accuracy.

The new goniometer, or angle-measurement machine, was built with the help of the National Bureau of Standards with three axes of measurement instead of the conventional two. "One [axis] is fixed to measure horizontal angles, the other two are variable to suit the immediate problem. …

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