The Forest Engineering Research Institute of Canada (FERIC) examined the measuring accuracy of common harvesters and processors operating in British Columbia and Alberta. The results showed large variations in length and diameter performance of the machines, which was attributed partly to differences in emphasis placed on measuring accuracy at the harvesting site. Other factors affecting measuring accuracy included variation in tree characteristics, lack of properly calibrated measuring systems, and wrong target lengths programmed in the measuring system's computer. Based on the findings, FERIC made suggestions to improve measuring performance.