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Angle measuring and drawing apparatus - with movable strip equipped with scale and used both as ruler and an angle drawing unit
Angle measuring and drawing apparatus - with movable strip equipped with scale and used both as ruler and an angle drawing unit
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机译:角度测量和绘图设备-带有刻度尺的可移动条带,既用作标尺又用作角度绘图单元
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摘要
Angle measuring and drawing apparatus by which the angle can be measured automatically. The apparatus includes a movable strip (1) connected to a ruler forming a rigid frame through a semi-circular geared section which carries a drive plate and a reversing plate connected to it by a flexible band. The band is fitted with read-off pins which are moved along straight scales. The movable strip (1) is equipped with a scale and its outer edge may be used as a ruler whilst the inner edge (3) is used as an angle drawing unit. The semi-circular geared section (4) is fitted with bearing pins as well as locking holes.
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