The modern evolution of the gripper is doubtless the array of products made by Iron Mind, the Nevada City, Calif.-based company founded by Randall Strossen in 1988.

2. Boldfit Adjustable Hand Grip Strengthener, Hand Gripper for Men & Women for Gym Workout Hand Exercise Equipment to Use in Home for Forearm Exercise, Finger Exercise Power Gripper (60 Kg) Blue ...