Abstract: A chain saw gauging attachment comprising an elongate, slender gauge rod having at one end a fitting with a bore adapted to receive said end, and means for firmly attaching the rod to the fitting. The fitting has a threaded bore aligned with the first bore and adapted to be threaded onto the protruding portion of an existing stud of the chain saw frame, so as to extend laterally from the latter and from the chain track. As thus mounted, the gauge rod extends along the length of a work piece or log which is to be cut, and the free end of the gauge rod enables the user to fix by sight the place on the log where the next cut is to be made. A knurled periphery of the fitting facilitates its being screwed onto the existing threaded stud. The gauge rod is slender and resilient, whereby it springs back to its original shape if accidentially flexed. The rod can be cut to a desired length, and can have a bend at its free end to facilitate the designating of the place for the next saw cut.