Once reading is taken pop off the pump extension install the desired thrust shim pop the pump extenion back on check end play and you are done. No more trying to hang a magnetic indicator base off the front of an alum. block or come up with some indicator stand that looks like trouble waiting to happen.
Tool includes a billet alum. indicator base that will clamp to all industry standard marmon clamp type fuel pump extensions, precision dial indicator, and mock fuel pump shaft that may have to be trimmed for different applications but should work with all RCD or RCD type fuel pump extensions.
Mock fuel pump shaft is designed to be used with RCD .625" hex cam hubs and pump extensions that use a .750" O.D. fuel pump drive shaft. Again pump shaft could be modified by the racer to fit different pump extensions if desired such as an Enderle. Indicator base and mock fuel pump shaft are anodized.
PICTURE WITH PUMP EXTENSION SHOWN IS FOR PICTURE PURPOSES ONLY.