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T-square
T-square

T-square

Date1890-1940
Inventory Number1996-1-0444
ClassificationT-Square
Subject
    Maker Keuffel & Esser Company 1867 - 1987
    Cultural Region
      Place of Origin
        Dimensions1.3 × 25.5 × 82.5 cm (1/2 × 10 1/16 × 32 1/2 in.)
        Material
          DescriptionThe T-square is constituted of two wooden beams of differing lengths. The shorter beam is attached flush and perpendicular to the longer beam at one end by four screws. The opposite end of the longer beam has a small circular hole drilled through it.
          Signedetched in a circle on the long arm: KEUFFEL & ESSER CO.
          Inscribedetched inside company name circle: N.Y. etched on long arm: 30 etched beneath Griffin trademark: TRADE MARK
          FunctionT-squares are used primarily for drawing horizontal lines, relative to some fixed perpendicular rule like the side of a draftsmen's table. They can also be used to aid in the drawing of triangles or the squaring off of various materials in construction.
          T-square
          T-square
          F.P. CO.
          Date: circa 1930
          Object number: 2003-1-0165
          T-square
          T-square
          American
          Date: 1900-1950
          Object number: 1996-1-0443
          T-square
          T-square
          Keuffel & Esser Company
          Date: circa 1945
          Object number: 2007-1-0074
          T-square
          T-square
          Harvard Cooperative Society
          Date: 1940-1960
          Object number: 1996-1-0445
          T-square
          T-square
          American
          Date: 1900-1950
          Object number: 2007-1-0075
          T-square
          T-square
          Charvoz, Inc.
          Date: 1940-1960
          Object number: 2007-1-0076
          set of two Crane & Vinton T-squares
          set of two Crane & Vinton T-squares
          Crane & Vinton
          Date: patented 1858
          Object number: DW0150
          T-Squares
          T-Squares
          Charrette Corporation
          Date: 1986-2003
          Object number: 2014-1-0105
          T-Squares samples from China
          T-Squares samples from China
          Date: 1974-2003
          Object number: 2014-1-0104
          hinged wooden angle
          hinged wooden angle
          Keuffel & Esser Company
          Date: 1890-1940
          Object number: 1996-1-0065
          pantograph
          pantograph
          Keuffel & Esser Company
          Date: circa 1875
          Accessories: pantograph weight (5140b); wooden stands
          Object number: 5140a
          Image Not Available for T-square, withplastic edges badly corroded, from the Harvard University Astronom
          T-square, withplastic edges badly corroded, from the Harvard University Astronom
          Eugene Dietzgen Company
          Accessories: Wrapped in white tissue paper
          Object number: 1996-1-0450