Been having some really good luck with these linear pots $2.95 from Sparkfun. I was introduced to these particular pots by Justin Gillen who was using them for measuring pitch loop position while doing the initial envelope expansion on his Tango II. We have been using them alot and have had particularly good luck running the signal through our MGL RDAC. Our MGL automatically datalogs the pot's position for post flight data processing. We have the channel labeled as a current meter using the auxiliary input.
What are you working on tonight?
Note: Also pictured are the rotary potentiometer $0.95 also from Sparkfun.