 | PDS-85, PDS-96 |
| Programmable Resistance Decade |
 | PDS-99 |
| Programmable Resistance Decade |
 | Resist-O-Stat |
| (RDS) Series are availabe in two versions- with basic accuracies of either ±0.025% or ±0.01%. Resistors used are low reactance types permitting the RDS to be used from dc through audio frequencies. Zero resistance is 0.0015 ohm/ decade. Numerical readout is positive and in-line. Switches are low noise "thermal" types with self-cleaning contacts |
 | Dial-An-Ohm |
| Dial-An-Ohm units (DA Series) provide reliable performance at less than one-half the cost of the RDS models, partly because DA thumbwheel switches are far less expensive than RDS rotary switches. |
