Grip strength meter - dynamometer

Japanese: 握力計 - あくりょくけい（英語表記）dynamometer

A device for measuring the grip strength of the hand. When gripped, a metal spring moves and the grip strength is indicated by a needle. It is used to test muscle strength and nerve function. There are two types: the Smedley type, in which the scale is located on the outside of the gripping part, and the Collin type, in which the scale is located on the inside, but the former is more accurate.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

手の握る力を測定する機器。握ると金属製のばねが動き，握力が指針で示される。筋力や神経機能を検査する目的で用いられる。目盛板が握る部分の外側についているスメッドレ式と，内側についているコラン式があるが，精度は前者のほうが高い。

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