| 摘要 |
Disclosed is a load cell comprising a Roberval mechanism made up of two parallel arms between a fixed end and a movable end and of four strain-generating-portions provided in such way that two strain-generating-portions are coupled to each other on each of said two arms. According to the present invention, said four strain-generating-portions all have the same thickness; and said two arms includes a first arm having strain gauges adhered to each of said two strain-generating-portions coupled to each other and a second arm having the thickness smaller than that of the first arm.
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