The RTD-200 is the most modestly priced of the "shunt decade design" instruments. Although absolute accuracy is lower by design than the "top of the line" models, the RTD-200 also offers GR's exclusive "no adder accuracy" and is the right unit for the job in a wide range of applications. Its absolute accuracy of ±0.02% over its entire range of 20-1121.1Q ohms, moreover, is often more accurate than the ±0.01% basic accuracy offered by many resistance decade units. This is because its overall accuracy statement of ±0.02% is absolute and includes all "O" resistance and contact resistance inaccuracies.