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set square

a thin flat piece of plastic, metal, etc, in the shape of a right-angled triangle, used in technical drawing
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Examples from the Web for set square
Historical Examples
  • In Figs. 30, 31, 32, the valve has no lap and the eccentrics are set square.

    How it Works Archibald Williams
  • Time, and right doing, would remedy and set square all that was untoward.

    Dorothy's Tour Evelyn Raymond
  • And set square in the center of the wall, just below the shelf and pole.

    Murder at Bridge

    Anne Austin
  • set square on the sward at his feet, he will look upon a craft quaint as was ever launched on lake, stream, or tidal wave.

    Gwen Wynn Mayne Reid
  • A set square, E, should be used for testing the accuracy of this part as shown (Fig. 98), F representing the bobbin case holder.

  • He was a tall priest and square-shouldered, with the broad brow and set square chin of a fighting man.

    Fort Amity Arthur Thomas Quiller-Couch
  • The yards were set square across, and along them were furled royals and upper topsails.

    Cap'n Warren's Wards Joseph C. Lincoln
  • Of course, we 've got the right of it, but in some way Fate has managed to leave us set square against the law.

    Beth Norvell

    Randall Parrish

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