Prior Scientific Inc.'s remote focus control unit for stereomicroscopes is designed to increase productivity and to decrease operator fatigue. The H160-Z is a free-standing unit that provides quick focus at variable speeds. The system includes a control box with joystick, high/low speed option, 3-ft cord with drive motor, and focus mount and sleeve. Foot-pedal controls are available as an option. The company also offers remote focus control units for compound microscopes.