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    • (Page 145)
  • RARE VOLUMETRIC MEASURE STANDARD RULE

    RARE VOLUMETRIC MEASURE STANDARD RULE

    $2950.

    View details
    TESSERACT

    TESSERACT
    US

  • OFFICIAL FRENCH STANDARD WEIGHTS — THE “PARALLELOPIPED KILOGRAM”

    OFFICIAL FRENCH STANDARD WEIGHTS — THE “PARALLELOPIPED KILOGRAM”

    $3800.

    View details
    TESSERACT

    TESSERACT
    US

  • REMARKABLE LINEAR MEASURE COMPARISON SCROLL

    REMARKABLE LINEAR MEASURE COMPARISON SCROLL

    $4500.

    View details
    TESSERACT

    TESSERACT
    US

  • Star diagonal by Broadhurst Clarkson

    Star diagonal by Broadhurst Clarkson

    £235

    View details
    Hatchwell Antiques

    Hatchwell Antiques
    GB

  • J H Dallmeyer SER XIV projection lens

    J H Dallmeyer SER XIV projection lens

    £220

    View details
    Hatchwell Antiques

    Hatchwell Antiques
    GB

  • UNUSUAL DOUBLE STOPWATCH

    UNUSUAL DOUBLE STOPWATCH

    $85.

    View details
    TESSERACT

    TESSERACT
    US

  • Prototype design for an aircraft propeller boss

    Prototype design for an aircraft propeller boss

    £585

    View details
    Hatchwell Antiques

    Hatchwell Antiques
    GB

  • Victorian Celluloid Desk Magnifying Glass in Case by CW Dixey London

    Victorian Celluloid Desk Magnifying Glass in Case by CW Dixey London

    £695.00

    View details
    Jason Clarke Antiques

    Jason Clarke Antiques
    GB

  • A DIVERSITY OF SLIDE RULES

    A DIVERSITY OF SLIDE RULES

    Various -- see listing

    View details
    TESSERACT

    TESSERACT
    US

  • Antique ophthalmology electromagnet of Prof. Dr Hirschberg

    Antique ophthalmology electromagnet of Prof. Dr Hirschberg

    Euro 290

    View details
    Nautilus Antiques

    Nautilus Antiques

  • Electromagnet by Ferninand Ernecke.

    Electromagnet by Ferninand Ernecke.

    € 145,-

    View details
    Van Leest Antiques

    Van Leest Antiques
    NL

  • Ruhmkorff Commutator, 1930

    Ruhmkorff Commutator, 1930

    € 110,-

    View details
    Van Leest Antiques

    Van Leest Antiques
    NL

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