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Graduated Beam Compass Drafting Supplies, Drafting Instruments, Beam Compasses
Retail: $58.00
Item #: 961X - See more from Alvin

    Includes two 13" graduated beam bars and one coupling to accommodate circles up to 48" diameter. Inch and metric graduations. Spring-loaded thumbwheel on the top of each slide assembly allows for smooth and precise adjustments. Comes complete with...

    18" Alumicolor Beam Compass Rule Drafting Supplies, Drafting Instruments, Beam Compasses
    Retail: $20.50
    Item #: 4110-1 - See more from Alumicolor

      Solves the problem of making perfect large circles up to 36" in diameter. This beam compass attaches to thin profile yardsticks and automatically shows figures for the radius circumference and area of any circle in inches or centimeters.

      Speed-Set Beam Compass Drafting Supplies, Drafting Instruments, Beam Compasses
      Retail: $45.00
      Item #: 961B - See more from Alvin

        Includes two 13" ungraduated beam bars and one coupling to accommodate circles up to 48" diameter. Spring-loaded thumbwheel on the top of each slide assembly allows for smooth and precise adjustments. Comes complete with interchangeable ruling pen...

        12" Alumicolor Beam Compass Rule Drafting Supplies, Drafting Instruments, Beam Compasses
        Retail: $18.50
        Item #: 4105-1 - See more from Alumicolor

          Solves the problem of making perfect large circles up to 36" in diameter. This beam compass attaches to thin profile yardsticks and automatically shows figures for the radius circumference and area of any circle in inches or centimeters.