| 摘要 |
PROBLEM TO BE SOLVED: To provide a measuring instrument capable of accurately measuring characteristics due to rotations such as torque of an article to be measured which rotates at high speed, by a simple structure and at a low cost.SOLUTION: Electric signals from a plurality of strain gauges 200 are detected through a flexible printed circuit board 100, and characteristics due to rotations of an article to be measured are measured. A flexible printed circuit board is equipped with a substrate body 100A; a terminal contact portion 110 formed on the substrate body, and connected with a plurality of strain gauges; and a wiring conductor pattern 160 formed on the substrate body, and electrically connected to the plurality of strain gauges for detecting resistance values of the plurality of stain gauges as electric signals. The terminal contact portion and the wiring conductor pattern are disposed to be axially symmetrical in a circumferential direction about a center axis of a strain-inducing portion 13. |
