The gear train consists of an internal gear, planet gears and sun gear. Train is driven by motor giving maximum input torque. Planet carrier carries the planet gears. Internal gears mounted over a flange which rotates the bearing, a pulley mounted over a output shaft of internal gear. Spring balance measures torque for both the internal gear and planet carrier. Either or them can be held stationery and holding torque required for stationery member and out put torque for the other member can be measured. A three channel digital rpm indicator at extra cost. For angular velocities . digital torque indicator for motor output torque ,at extra cost.
