combinable with other modular panel for achieving more canadian programming and statistical tables

摘要

A modular panel for building magnetic programming and statistics boards, the panel being formed from a sheet of metal 11 over which is formed a grid of grooves that form two mutually perpendicular sets of equally spaced parallel lines and define an array of projections 14. At least one pair of removable strips 30, 31 are mounted a given distance away from each other on the panel. Means are provided to fasten the strips to the panel and for supporting card index sheets and/or cursors for the formation of graphs. IMAGE