The invention claimed herein presents a kit that allows the user to build a functioning model of the type of mechanical hand used in prosthetics and robotics. The finger segments 4 of each digit are connected in a fashion that results in adjustable joints. The completed hand opens and closes via motor and gearbox 8. (FIGS. 1 and 2). Limit switches 38 restrict travel of the fingers to the grip range of the human hand. The hand is operated using a electrical, radio, infrared or digital remote control system, with receiver 22 mounted in the hand and transmitter 28 concealed within a glove or cuff 30 which can be worn by the user (FIG. 2). This system allows the invention to be operated via motion of the user's hand/wrist 36, which actuates a switching means within said glove or cuff. Movement can also be activated via onboard control switch 24.

A therapeutic device for massaging hands and wrists which has upper and lower panels affixed to respective upper and lower housing via a plurality of compressible vibration-absorbing mounting pads. An elevated wrist rest extends across the anterior end of the outer face of the lower panel. The device includes a plurality of vibration mechanisms and heating/electrical stimulation elements mounted onto the outer fact of the upper and lower panels. A hinge connects the upper housing to the lower housing. A latch-and-switch mechanism engages and secures the upper and lower housing together and connects the electrical circuit of the upper housing with the electrical circuit of the lower housing. A plurality of batteries and a removable power cord are both interconnected with the device's electrical circuits to provide either battery or line voltage electrical power.