| 摘要 |
PROBLEM TO BE SOLVED: To provide a pendulum type level/plumb gauge and switch/sensor, capable of providing an indicator in the gravity axis by the principle that "a pendulum points in the direction of gravity (vertical)" such that a compass points north, having a mechanism sensed by the indicator and having high accuracy.SOLUTION: A rotation axis ball 1 is provided in one end of the shaft of an indicator 3 showing the direction of gravity and provided in the center of a bearing plate 5 to be used as a rotation axis, and a weight 2 is provided below. The indicator 3 showing the direction of gravity and provided so as to show the central point of a bottom plate 6 or the central point of a top plate 4 senses the direction of gravity by the principle that "a pendulum points in the direction of gravity (vertical)". |
