IET Labs RS-201 Precision Resistance Substituter Direct reading - No fumbling with multiple slide or rotary switchesThe IET family of digital substituters uses convenient side-by-side thumbwheel switches. Simply dial in the desired values and use. For Easy Value ReadingsRanges are separated by color-coded switches and numbers. Broad Choice of standard and optional modelsA full line of standard substituters satisfies most requirementsRS Series Resistance Substitution BoxThe RS Series Resistance Substitution Box is the most commonly used decade box on the market today. The RS Series is not only easier to use, but it is also priced lower than most its competition.The easy of use and 0.1% accuracy makes the RS Box ideal for daily verification of test equipment before measurements, troubleshooting in the field or on the factory floor.One nice feature of the RS Series is that it uses convenient side by side, color coded, thumbwheel switches allowing for direct reading There is no fumbling with multiple slide or rotary switches. Simply dial in the desired values and use!Made of high impact plastic and weighing less then a pound, these substituters are very portable and can reduce clutter on a busy lab bench.