Handeful Grip Strength Tester Trainer - Dynamometer Handgrip Measurer Meter, Handheld Strengthener Exerciser for Sports, School, and Home Use

u/an__amAt my son's PT they have a grip strength tester where the grip looks like a keyboard and each finger can apply individual pressure (similar to this https://www.amazon.com/Handeful-Dynamometer-Measurement-Electronic-Strengthener/dp/B08X4JQDJZ/ref=sr_1_2_sspa?crid=3YZ52V9OADLK&dib=eyJ2IjoiMSJ9.VXnGUkoVbeVyeZ6RPx0vip0pQkDxoz92_ZPRyRjH2U7rtagE4lqPk9QNHYq0vGYjKpZExVqb53pvASYE6XXfnAkIrbC3d67KOvfsuuBGlbN91KYLc6nLeSmdJz6B8Kymp739gvJeSv9XlM4__hyh2sPyBqRD_nCkkREIN5h9bEwNUsEMQQIclFHS5_FHv0vYsKGp5v4zPvcqgxm5gBZMBXGCpn0dqo42dTFYnN9M8Q4y0NxwDJ8B9QuMReOkm1CG0LsDwDedKICRpwFqxMQeohuEMqAb5-My-EUeOe-xA78.367bkzrXj7Bg88FFl2cRLxwm7b6XfuaW6PhQdWu1jjA&dib_tag=se&keywords=finger+strengthening+devices&qid=1782359817&sprefix=finger+stren%2Caps%2C335&sr=8-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1) Alternatively, something like this may work amazon.com/Prohands-Strengthener-Spring-Loaded-Finger-Piston-Red-Gripmaster/dp/B0006GC5D8/ref=sr_1_1_sspa?crid=3YZ52V9OADLK&dib=eyJ2IjoiMSJ9.VXnGUkoVbeVyeZ6RPx0vip0pQkDxoz92_ZPRyRjH2U7rtagE4lqPk9QNHYq0vGYjKpZExVqb53pvASYE6XXfnAkIrbC3d67KOvfsuuBGlbN91KYLc6nLeSmdJz6B8Kymp739gvJeSv9XlM4__hyh2sPyBqRD_nCkkREIN5h9bEwNUsEMQQIclFHS5_FHv0vYsKGp5v4zPvcqgxm5gBZMBXGCpn0dqo42dTFYnN9M8Q4y0NxwDJ8B9QuMReOkm1CG0LsDwDedKICRpwFqxMQeohuEMqAb5-My-EUeOe-xA78.367bkzrXj7Bg88FFl2cRLxwm7b6XfuaW6PhQdWu1jjA&dib_tag=se&keywords=finger+strengthening+devices&qid=1782359817&sprefix=finger+stren%2Caps%2C335&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1