HUMAN VISUAL AID Russian patent published in 2014 - IPC G09B19/00 

FIELD: personal use articles.

SUBSTANCE: invention relates to manual educational media bearing orderly positioned signs and symbols. The body has a base with information carriers in the form of signs and symbols orderly positioned on it and/or on its elements. Mounted perpendicular to the base are plates with information carriers arranged in columns, the first one containing one cell while the last one contains eighty-one cells. The columns are sectorally divided in multiplies of three, each sector categorially designated with a numeral divisible by three; the symbol of any cell contains the column ordinal number and a numeral corresponding to the cell position if counted from the base upwards; the categorical designations are positioned essentially parallel to the base. The plates are positioned in guides. Rolling movement means are mounted ion the support. The support is designed as having legs; between at least two of the legs is a tabletop for accommodation of operation means inclusive of PC elements.

EFFECT: increased convenience of use.

6 cl, 6 dwg