| 摘要 |
PROBLEM TO BE SOLVED: To provide an indicator in which a painter can be settled accurately through a simple structure without consuming any power using an oscillatory actuator. SOLUTION: The indicator comprises an oscillatory actuator 7 for driving an oscillator being excited through electromechanical energy conversion and a contactor relatively, an indicating member 6 being driven through the actuator, a resistor means 1 for sensor having resistance variable depending on the state of an object to be detected, a resistor means 8 for detecting position having resistance variable depending on the driving position of the indicating member, and control means 3, 4 for driving the oscillatory actuator in the direction for decreasing the difference of resistance between both resistor means 1, 8. |
