Propeller Dynamometers are based on original Kempf & Remmers designs and have a reputation for reliability and accuracy. Using modern rotating and non-rotating transducer technology incorporating compensation for both zero drift and sensitivity to measure torque and thrust, these instruments are the workhorses of modern hydrodynamic laboratories. Many hundreds are currently in use worldwide. Our single and contra-rotating Propeller Dynamometers can be supplied in a number of different configurations, which include integral motors and angled drives. They are suitable therefore for use within model ships (unsealed designs) and on Towing Carriages and pressurised Cavitation Tunnels (waterproof designs). Our Propeller Dynamometer range is designed to permit experiments over a wide range of speeds, thrusts, and torques, although non-standard requirements can easily be accommodated.