(under subclass 157) Device in which one of two relatively vertically movable parts has a series of vertically spaced apertures or grooves, and the other part carries a detent
selectively engageable with one of the apertures or grooves to hold the parts in adjusted position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
407+, for a vertically adjustable standard type stand held in adjusted position by a notch or cavity engaging latch.
