Elma’s E18 rotary encoder comes in through-hole and surface-mount versions in the 14.4 x 11.4 x 6.5mm body size. Rotational life is up to 150,000 revolutions, according to distributor Foremost, which is stocking the part. There is a choice of 16, 24 or 30 detents per revolution and also a choice of detent torque (0.5, 1.5 or 2.5Ncm), ...
This story continues at Rotary incremental encoder has more options than you can shake a stick at
Or just read more coverage at Electronics Weekly