| 摘要 |
Suspension device for an angle indicator (3) intended to indicate the angle of an object to the vertical line and comprising two angle-indicating devices (1, 2) designed each to indicate a predetermined angle to the vertical line and located in two planes perpendicular to each other. The suspension device comprises an outer ring (4), which is attached rotatably about a diameter of the ring (4) and connected to said object, and an inner ring (9), which is located perpendicularly to and inside of said outer ring (4). The inner ring (9) is movable along the inside of the outer ring (4). Attachment means (15, 16) are provided for the angle indicator (3) inside of the inner ring (9) and movable along the inner ring (9). According to a preferred embodiment, the attachment means (15, 16) are designed to attach the angle indicator (3) so that one of said angle indicating devices (1, 2) indicates the angle of the plane of the inner ring (9) to the vertical line. |
