Linear potentiometer:

Gefran PZ12-A-150

Measuring range: 0...150 mm (0...6 inches)
(Other available lengths: 25,50,75,100,125,200,250 mm)
Supply voltage: 5 Volts from RaceDAC

linearpotentiometer

- Lightweight
- Selfaligning ball-joints
- Aluminum, Nylon and Stainless steel construction
- Better than +-0.05% overall linearity
- IP60 protection degree ( = for normal dry track conditions, fully dust protected)
- High mechanical shock and vibration capability

Full specifications
Installation guide