end of the secondary element 12 is provided with a scribing protuberance 23 that is formed on and extends coaxially thereof as is evident in fig3 a transition portion 26 is provided that extends between the horizontal leg 16 and the vertical leg in the preferred embodiment the pintle and secondary element are each formed from a rod of a copper base alloy such as brass the upper portion 22 of the vertical leg of the pintle is provided with threads 24 and carries a nut 25 on which the secondary element 12 rests in an adjustable vertical position the nut being locked in position by a socket head set screw 28 the operation of the invention will now be readily understood in view of the above description when the cabinet door 14 is to be mounted in its frame 13 it is a practice according to the present invention to provide the adjacent corners of these elements with 45 degree bevels 20 and 27 as shown in fig2 a hole is bored perpendicular to the bevel 20 and the pintle 11 is screwed into the bore in the frame 13 taking advantage of the wood screw threads 17 it is left with its vertical leg extending in a vertical position similarly a bore is provided in the.