Froment Sigma 5 - Used to test, measure and record the power of tractors and self-propelled machinery. Sigma Dynamometers are used throughout the World to prove engine power and performance. No need to come to us, we can come to you! These portable dynos are used for routine pre-delivery inspection of new tractors and self-propelled machines, and for diagnostics and fault-finding on used equipment. Our Sigma Dynamometer can carry out tests on the full range of tractors on the market today - from compact tractors to forage harvesters. Testing is quick, accurate, and simple to carry out, with a choice of automatic or manual test modes. Results, including graphs of power and torque can be printed out as a permanent record. CarTrac's Froment Sigma series dynamometers are recognised as market - leading products for testing power and performance.