Tube Wound with heavily oxidized eureka wire and mounted on duco painted metal feet provided with laminated brush contact of phosphorus brass strips with brass C.P. guide rod and three terminal to use rheostat as potentiometer. These rheostats have excellent heat dissipation smooth moving rider and ruggedly built. Total resistance and max current capacity are marked on the slider.
Length | Amp | 15 cm Ohms | 20 cm Ohms | 25 cm Ohms | 30 cm Ohms | 35 cm Ohms | 40 cm Ohms | 45 cm Ohms | 50 cm Ohms |
| 6.5 | 3.5 | 5.5 | 7.5 | 9.5 | 11 | 13 | 15 | 17 |
| 5.0 | 5.5 | 8 | 11 | 14 | 17 | 20 | 23 | 26 |
| 4.2 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 |
| 3.3 | 14 | 20 | 28 | 34 | 42 | 48 | 58 | 64 |
