Programmable device for reading and comparing grids of 5 times 10 boxes, some of which have been ticked, with a standard grid

摘要

Invention relating to a reusable programming device for standard grids. Device constituted by superimposed plastic sheets 1, 2, 3, 4 and 5 and ten small guide bars 7 with windows sliding in space 9. The specific arrangement of the windows of the guide bars 7 makes it possible to programme, at 12, the thirty-two combinations of five boxes. The user programmes the standard combinations sought, then inserts a sheet 8 into the apparatus, slides it with one finger through the holes 11 and superimposes the grid to be compared with the standard grid. He then directly reads the correspondences through the windows of the guide bars. This device according to the invention is intended for rapid and error-free comparison of ten programmings of five times ten boxes. IMAGE