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1915 American Vulcanized Fiber Article Charles Almy Jr Metallurgical Engineering

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2 Old School Helix Geyer Nickel Drafting Compasses Masonic 1960's England

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Vintage Compass technical drawing pieces set ECO BRA - Made in Germany

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Slide Rules AW Faber AW Faber Castell Models Types Scales by Peter Holland RARE

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Theodolite With Original Case Sokkisha TM20ES Surveying

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New York University Quadrangle Engineer Mag Vtg 1934 Original Rare HTF Oil Crack

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Vintage Fearns Inches Millimetres Fractions Conversion Calculator Rotate Cursor

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steam turbine bucket dovetail groove blueprint V-10917 Moore Steam Turbine 1933

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Slide Rule Siemens

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Ruler Vintage 12" STAEDTLER MARS 987 19-31 Triangular Drafting Architects Scale

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VINTAGE P.I.C THORNTON SLIDING RULER RULE ENGINEERING MATHEMATICAL STATIONARY