Dial Gauge timing kit for inspection and adjustment of ignition timing. High quality, high precision instrument by Central Tools. 5.0mm range, .01mm increments, 0-100 sweep reading. This gauge will work with the engine in the frame on RD's, R5, RZ's, and most bikes. Includes indicator with easy read yellow face, adapter and 2 threaded extension (contact) rods (1-1/2" & 2"), foam padded box and instructions. This is our recommended timing gauge and the same one we use in the shop. Replacements parts available.