| 摘要 |
A drawing head for use in drawing devices, in which a first flat member is, along with spherical bodies, integral with a bracket which connects the member with an arrangement used to move the head in the plane of a drafting board, and is rigidly fixed to a hub accommodating an axle. A second flat member is rigidly fixed to the axle and has cavities corresponding to the spherical bodies. The arrangement used to turn one flat member relative to the other member includes two washers mounted on the hub one above the other. With the first washer resting upon tappets disposed in openings in the first flat member, and resting upon the surface of the second flat member, and the second washer is mounted stationarily in the axial direction.
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