What It DoesHow It WorksVariantsConventionalRotary DIPGray CodePC Board Rotary SwitchMechanical EncoderPushwheel and ThumbwheelKeylockValuesHow to Use itWhat Can Go WrongVulnerable ContactsContact OverloadMisalignmentMisidentified Shorting SwitchUser AbuseWrong Shaft, Wrong Knobs, Nuts That Get Lost, Too Big to Fit