I need to purchase a pair of sliding pots for use as input to an arduino. They will function as steerage so I’d like a centered ‘indent’ that gives physical feedback that the slide is ‘zeroed’. I’d like the total size to be between 6 and 9 inches. I’d like just enough friction to the movement that it feels (admittedly very subjective) like a high quality control.
Would very much welcome recommendation of supplier(s) where customer service is in a position to guide a non-tech user into best option.