The dynamograph is mounted on drive shaft 1 of the machine and is furnished with pulley or sprocket d which transmits torque to the driven shaft through lever 2. Lever 2 turns bell-crank lever 3, and lever 3 turns bell-crank lever 4. Axial force, acting on rod 5, is transmitted to ball a of load cell 6 which is mounted on fixed yoke 7. The pressure of the liquid in load cell 6 is indicated by a pressure gauge.
$3930$LHP,M$