Compass for use at larger surface board, has base provided at leg, where base is set on board and has cover that is made from soft material of increased adhesion at surfaces of board, and disc comprising view holes around center of disc

摘要

The compass has a base (4) that is provided at a leg (1) and is set on a board. The base has a cover that is made from a soft material of increased adhesion at surfaces of the board. The base has three-arms (5), where each of the arms is comprised of the cover. The base has a disc (6) comprising view holes around center of the disc. The cover carries burls or other projections on a surface of the cover.