That is a block of acetal with a 1/4" hole across, through which a 1/4"-20 screw holds the dial test indicator, and a 1/4"-20 threaded hole through which a long screw goes. The screw end goes into a drill chuck. There is less than .0005" movement per inch of X motion; perhaps .0006-.0007" per inch of Y. Good enough.
Conservative. Idaho. Software engineer. Historian. Trying to prevent Idiocracy from becoming a documentary.
Email complaints/requests about copyright infringement to clayton @ claytoncramer.com. Reminder: the last copyright troll that bothered me went bankrupt.
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