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. STANLEY-BOUCHER CALCULATOR BY W.F. STANLEY

    STANLEY-BOUCHER CALCULATOR BY W.F. STANLEY

    $1,250.00

    English, 1st quarter 20th century Learn More
  3. MAJOR GENERAL HANNYNGTON "EXTENDED" SLIDE RULE

    MAJOR GENERAL HANNYNGTON "EXTENDED" SLIDE RULE

    $3,250.00

    English, 1st quarter 20th century Learn More
  4. BOUCHER'S CALCULATOR BY MANLOVES LONDON

    BOUCHER'S CALCULATOR BY MANLOVES LONDON

    $1,250.00

    English, 4th quarter 19th century Learn More

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