Pivoting horizontal display tray - has two plates superimposed and joined by central screw with and ball bearings

摘要

The pivoting display-tray is for ornaments and consists of two plates (1,3) joined by a central axle (7), which forms part of one of the plates. The two plates are in contact via ball bearings (6) inside a circular projection (5). The lower plate (3) has bevelled corners, or is circular. The central axle consists of a screw with a milled head turning in a corresponding hole (4).