The Gemmary, Inc.

P.O. Box 2560, Fallbrook, CA 92088, (760) 728-3321 rcb@gemmary.com

If you have any questions, please call or email

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  1. 2 3/8" CHARPENTIER CIRCULAR SLIDE RULE CALCULATOR

    2 3/8" CHARPENTIER CIRCULAR SLIDE RULE CALCULATOR

    $850.00

    French, 1st quarter 20th century Learn More
  2. 4 5/8" FOWLER'S 'MAGNUM' TEXTILE CALCULATOR (4MT2b)

    4 5/8" FOWLER'S 'MAGNUM' TEXTILE CALCULATOR (4MT2b)

    $350.00

    English, first half 20th century Learn More
  3. GEM ADDING MACHINE (5 PLACE) by AUTOMATIC ADDING MACHINE MFRS.
  4. 'THE ENGINEER'S SLIDE RULE" from E.M. SCOFIELD

    'THE ENGINEER'S SLIDE RULE" from E.M. SCOFIELD

    $750.00

    American, patent dated July 2, 1901 Learn More
  5. STANLEY-BOUCHER CALCULATOR BY W.F. STANLEY

    STANLEY-BOUCHER CALCULATOR BY W.F. STANLEY

    $1,250.00

    English, 1st quarter 20th century Learn More
  6. 2 3/8" DENSO CIRCULAR SLIDE RULE & LEATHER CASE
  7. MAJOR GENERAL HANNYNGTON "EXTENDED" SLIDE RULE

    MAJOR GENERAL HANNYNGTON "EXTENDED" SLIDE RULE

    $3,250.00

    English, 1st quarter 20th century Learn More
  8. "THE ROSS PRECISION COMPUTER" CIRCULAR SLIDE RULE by COMPUTER MFG. CO.

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