| 摘要 |
<p>The drawing office table has a support frame and attached parallelogram guide consisting of guides and height adjstable supports. The drawing board is adjustable in inclination through a bearing which can be fixed at various heights and angular positions. A scissor linkage (14,17) is connected on one side with the drawing board (5,6) and with one bar (11) of the parallelogram guide linkage on the other side. The scissor links can be fixed jointly by a device (21) connected to the support strut (8). The scissor sections may be locked by a pressure bolt fitting through slots at the cross over point.</p> |
