(under subclass 188.1) Device including means for adjustment of the device up or down with respect to the surface upon which it rests or means to compensate for unevenness or irregularity in said surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
446, for a device for supporting a book in open position including compensating means for maintaining the two halves of the open face of the book in substantially the same horizontal plane.
649+, for a machinery support comprising independently adjustable legs or feet.
