What is the accuracy of INPEAK POWERCRANK? We declare measurement accuracy of +/- 2%. Tagged: accuracymeasurementpower measure Related Articles Is the crank drilled or milled during assembly? Does the installation of the device affect the strenght or mechanical properties of the crank? Will POWERCRANK work in a MTB bike? I have an oval chainring. Will POWERCRANK show correct values? I have a disbalance between the right and left leg. Will POWERCRANK work properly? Do I need to install the magnet or cadence sensor on my bike when using the POWERCRANK? Is the device resistant to the conditions during training / competition?