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SUPERB CELLULOID CLEVELAND TWIST DRILL CO. + LAVIN & SONS CALCULATORS

SUPERB CELLULOID CLEVELAND TWIST DRILL CO. + LAVIN & SONS CALCULATORS

$65.00 USD

Both is excellent condition. Includes the following:

  • Wonderful 1937 Cleveland Twist Drill Co. Drill Cutting Speeds Calculator in celluloid
  • R. Lavin & Sons Metal Alloy Slide Rule & Calculator