| 摘要 |
PURPOSE:To make it possible to cope with many kinds of LP gas containers, by making it possible to easily re-adjust an indicator to zero scale even if the radiuses of curvature of the mirror plate parts of the LP gas containers differ. CONSTITUTION:In a configurational part approximate to a corroded mirror plate part 4, if a push rod 20 is pushed to the direction shown by an arrow R while three support legs 23 hold a main body 1 so as to be contacted with the mirror plate part 4, the inside 21a of a hook 21 pushes a lever 13 to move the same in a circular arc state. Therefore, a lever 8 also moves in a circular arc state by the frictional resistance of a seat plate 12 but impinges against a stopper 27 on the way to be stopped. However, if the push rod 20 is further pushed, sliding is generated and only the lever 13 moves. Next, if the push rod 20 and the hook 21 are returned to their initial positions by utilizing the repulsive force of a compression coil spring 22, the inside of the hook 21 allows the lever 13 to move to the direction shown by an arrow S in a circular arc state. At this time, the end part of a lever 6 cooperated through a lever 8, a pin 9 and a fulcrum shaft 5 presses a pin 3 to the side of the mirror plate part 4. Hereupon, the circular arc movement of the lever 8 stops but the lever 13 continues circular arc movement by a sliding phenomenon and stops along with the hook 21 to set the position of an indicator 17 at this time to a zero scale.
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