Jamar數碼手功能評估箱是用于手部各功能，如: 握力、捏力、感覺、關節活動度等功能測試和評估的理想工具。

Jamar手功能評估箱八件套，包括：Jamar?數字200磅手握力計， Jamar? 30磅機械捏力計，小關節測角儀， 6英寸手指測角儀，卷尺，手指周長計， 5件套單絲測試， Discrim -A- Gon? 兩點辨識覺測試盤。

Jamar握力計是醫用級握力計和科研級握力計國際公認的工具。

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Am J Occup Ther . Jul-Aug 2013;67(4):480-3.
Interinstrument reliability of the Jamar electronic dynamometer and pinch gauge compared with the Jamar hydraulic dynamometer and B&L Engineering mechanical pinch gauge
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Biomed Res Int. 2020 Apr 20;2020:6936879. 

Validating the Capability for Measuring Age-Related Changes in Grip-Force Strength Using a Digital Hand-Held Dynamometer in Healthy Young and Elderly Adults