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. "THE ROSS PRECISION COMPUTER" CIRCULAR SLIDE RULE by COMPUTER MFG. CO.
  2. BOUCHER'S CALCULATOR BY MANLOVES LONDON

    BOUCHER'S CALCULATOR BY MANLOVES LONDON

    $1,250.00

    English, 4th quarter 19th 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. 2 3/8" DENSO CIRCULAR SLIDE RULE & LEATHER CASE
  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. '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
  7. HERRING TONNAGE MACHINE BY TOOL AND DIE MFG. CO.

    HERRING TONNAGE MACHINE BY TOOL AND DIE MFG. CO.

    $675.00

    American, late 4th quarter 19th century Learn More
  8. GEM ADDING MACHINE (5 PLACE) by AUTOMATIC ADDING MACHINE MFRS.
  9. PERFECTION SELF-ADDING RULER by COLUMBIA NOV. CO.
  10. 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
  11. 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

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