Resistance box with 7 decade ranges of resistance. REED R5408 Offers This resistance decade box can be used to design and test circuits. The R5408 features slide switches that allow a user to easily add or subtract to quickly reach the desired resistance range. Once tested, a resistor indicated by the decade box can then be put into the circuit. Features 1% Resistance substitution from 1 to 11,111,110O Excellent for circuit development 3 binding posts permit isolated substitutions 7 decade ranges of resistance Durable construction Included REED R5408 Resistance Decade Box