Vintage Hand Dynamometer Therapeutic Instruments Hand Therapy Medical Device

Vintage Therapeutic Instruments hand Dynamometer. Comes with case. Old item and shows signs of much use. Foam inside case shows much wear. Outside could use a detailed cleaning. Price reflects that. Please message with any questions. I’m not familiar with this product. I did grip it and pull, the needle moves. I got it to 20 and I think that was right about the same as after I had carpal tunnel surgery while in therapy using theirs. That’s all I know lol. T5