This tool simplifies and speeds the process of checking crankshaft run out on both Twin Cam and EVO model engines with the crankshaft installed. The tool mounts to the cam chest side of the engine case using the designated mounting holes of the tool combined with the handled thumb screws and the case cam cover bolt holes. The tool gives quick and accurate readings of the engines crank pinion shaft run out and makes for a great display to show and explain to customers the condition of their crankshaft. Quickly and accurately measures gear drive back lash on TC engines, using the supplied spacer to bolt indicator to top right cam cover bolt hole. Tool includes: tool plate, +/-0.001dial indicator, thumb screws & hardware. MADE IN THE U.S.A. FEULING PART # 9015 FITS: TC 99 - PRESENT, EVO 84 - 99 FEULING PART # 9016 Replacement universal 1 Dial indicator fits tool #9015. 0.001 Fitment: Measures Crankshaft run out on Shovel, EVO & TC and Gear Drive Backlash on Twin Cam gear drive setups