RS CP Series Servo Potentiometers. This series of RS servo potentiometers are available in various sizes and the series provides a range of resistance options up to 10k . Constructed from a conductive plastic that is optimised for a long life, these potentiometers feature an anodised aluminium precision machined body. These potentiometers offer noise free output due to a precious metal wiper. ±50% standard resistance tolerance 360° (single turn) mechanical rotation 350° electrical angle 3W power rating at 70°C