Angle measuring instrument esp. goniometer - has scale disc with leg and has measuring leg arranged concentrically to disc

摘要

The goniometer has a measuring leg pref. attached to a second disc and both discs can be turned in relation to one another. The first disc (1) has on its resting face a preferably elastic adhesive layer (8). The measuring leg (5) has a handle. This handle (9) is adapted to the shape of the fingers gripping it and has cavities (10) on both sides. One disc has a counterweight (11) balancing the weight of the leg (3). This is to reduce the tendency for one disc to turn in relation to the other disc when the position is vertical.