Decoders are information wheels designed to present maximum information in an easily understood, clear format.
They usually involve a number of turning wheels on which the information has been organized in such a way as to allow rapid access & instant recognition. The information density makes each decoder equivalent to a substantial book. The decoders are made from durable materials and are protection coated. When folded, they measure 6" x 6" (15cm x 15cm). They unfold to a full size of 18" x 6" (three panels). Save 50% on all decoders while supplies last!