| 摘要 |
PCT No. PCT/DK96/00092 Sec. 371 Date Sep. 8, 1997 Sec. 102(e) Date Sep. 8, 1997 PCT Filed Mar. 5, 1996 PCT Pub. No. WO96/27503 PCT Pub. Date Sep. 12, 1996A drawing instrument such as a drawing triangle (2) comprising a handle (32) and rulers along edges (10, 12) which mutually form a right angle and two acute angles (6, 8). Alternatively, the drawing instrument may be a protractor (36) having a handle (48) with a circular ruler (38) along its peripheral outer edge. Both the drawing triangle (2) and protractor (36) are provided as a three-dimensional, spatial body having a handle (32, 48) formed by an upper, preferably open, part of the spatial body and having outer side edges (10, 12, 38) which preferably are provided with scales and define a common ground plane adapted to rest against a drawing plane, preferably a generally vertical black-board.
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