C&K’s 3 series thumbwheel switch is the most complete thumbwheel product offering in the entire industry. Used in industrial equipment, computer devices and test & measurement devices, engineers turn to the 3 series because of its reputation for quality and resiliency. Available with a variety of options, including front or rear mounting and spacers that can fit most panel cutouts, it is clear why C&K’s 3 series is at the top of any engineer’s wish list.