Rotomatic Rule (Model D90320)
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DISCONTINUED (verified 12/95) RETAINED IN DATABASE FOR REFERENCE. The Rotomatic Rule is a tactile aluminum rule which can easily be read to 1/64 inch for individuals who are visually impaired. A rectangular nut is threaded on the rod. As the nut is backed away, each 1/4 turn (easily checked by the mark on the nut) represents an additional 1/64 inch. Lock nut for setting and holding any dimension. One end of the rule is threaded to receive extension rods. DIMENSIONS: The rule is six inches in length.