| 摘要 |
PCT No. PCT/FR83/00020 Sec. 371 Date Sep. 27, 1983 Sec. 102(e) Date Sep. 27, 1983 PCT Filed Jan. 26, 1983 PCT Pub. No. WO83/02662 PCT Pub. Date Aug. 4, 1983.The invention concerns apparatus for measuring the inclination or gradient of a plane or line. The objective of the invention is apparatus for measuring the inclination or gradient of a plane or line with respect to a predetermined reference plane, comprising a generally rectangular or trapezoidal frame equipped with three outer bearing surfaces disposed at right angles one to another along three of the sides of said frame, a device integral with said frame, sensitive to variations in position in space of said apparatus and which can output a signal proportional to the angular deviation between one of said bearing surfaces and said reference plane, and means of displaying the value of the measurement taken by said sensitive device.
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