| 摘要 |
<p>The present invention provides a magnetic board for holding display elements and the like contemporaneously horizontally and/or vertically. The board comprises a plurality of panels made up of respective metal sheets. Each of the metal sheets has a first series of spaced, parallel grooves embossed thereon for receiving display elements therein, and a second series of spaced, parallel grooves embossed thereon for receiving display elements therein. The grooves of the second series are perpendicular to those of the first series and form a grating subdividing the panels by grating nodes having equal center-to-center distances. An arrangement is provided for coupling adjacent panels together In such a board, the signalling elements may be placed in the grooves in horizontal and vertical positions at the same time.</p> |
