Abstract: A gauge and method for facilitating the setting of ignition breaker points in an internal combustion engine of the type in which the breaker point cam is removable from associated structure rotatably supporting it. The gauge is adapted to be substituted for the cam on the associated support structure and to present a surface area for displacing a cam follower a distance corresponding to the high lift point of the removed cam independently of the exact angular position of the gauge. Retained with the substitution gauge is a feeler gauge having a thickness corresponding to the desired gap of the points.