Abstract: A machine for cutting a tubular key from a tubular key blank. The tubular key blank is mounted on a stanchion and is rotatable in respect thereto. Also, the tubular key blank is movable a limited lineal distance in respect to the stanchion. A key ejector assembly is connected with the key blank supporting mechanism to manually eject the key after the key has been cut. A cutter is mounted on a mounting assembly which is lineally movable in two directions (perpendicular to each other) in respect to the base. Measurement means in the form of a plurality of dial indicators are mounted between the base and the mounting assembly to accurately ascertain the extent of movement of the mounting assembly in respect to the tubular key blank. A decoder mechanism is mounted on the base which is to be used to measure the length of grooves already cut within a tubular key permitting that key to be duplicated within the tubular key blank mounted within the key supporting structure.