| 摘要 |
PCT No. PCT/SE79/00243 Sec. 371 Date Aug. 1, 1980 Sec. 102(e) Date Jul. 21, 1980 PCT Filed Nov. 30, 1979 PCT Pub. No. WO80/01202 PCT Pub. Date Jun. 12, 1980.A suspension device for an angle indicator intended to indicate the angle of an object to the vertical line and comprising two angle-indicating devices 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 which is attached rotatably about a diameter of the ring and connected to the object, and an inner ring which is located perpendicularly to and inside of said outer ring. The inner ring is movable along the inside of the outer ring. Attachment components are provided for the angle indicator inside of the inner ring and enable movement along the inner ring. According to a preferred embodiment, the attachment components are designed to attach the angle indicator so that one of the angle-indicating devices indicates the angle of the plane of the inner ring to the vertical line.
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