To provide a muscular strength measuring device which can perform easily and efficiently muscle strength measured against the small primates, such as marmosets. Strength measuring device 1, the pulling operable control lever 2 forward, the stage 3 that is connected to the operating lever 2, a support plate 4 for movably supporting the mounting table 3 in the longitudinal direction, and the mounting table 3 of the pulling operation of the operation lever 2 comprises a spring member 5 for urging in the opposite direction, and the food pan 6 that will be deployed under the table 3. The support plate 4 window hole 41 is formed, food F is placed on the mounting table 3 through the window hole 41. The mounting table 3, a through hole 34 is formed at the rear of the window hole 41, the food tray 6 through the food F on the mounting table 3 by the forward movement of the mounting table 3 window holes 41 and the through hole 34 fall. The front end of the support plate 4 is provided upright transparent cover 7, food F on the table 3 to the mounting from the front is visible.マーモセットなどの小型霊長類に対して容易にかつ効率よく筋力測定を行える筋力測定装置を提供する。筋力測定装置1は、前方に引き操作可能な操作レバー2と、操作レバー2に連結された載置台3と、載置台3を前後方向へ移動可能に支持する支持板4と、載置台3を操作レバー2の引き操作とは反対方向に付勢するバネ部材5と、載置台3の下方に配備されるエサ受皿6とを備える。支持板4には窓穴41が形成され、窓穴41を介してエサFが載置台3上に載置される。載置台3には、窓穴41の後方に貫通孔34が形成され、載置台3の前方への移動により載置台3上のエサFが窓穴41および貫通孔34を通ってエサ受皿6に落下する。支持板4の前端には透明カバー7が立設されており、前方から載置台3上のエサFが視認可能である。
