Profile: Barker Controls, Inc. is a manufacturer of counter and control devices. Our product line includes electronics counter, electromechanical , pneumatic. mechanical, timers, encoders and valves. Our pneumatic preset type 497 is equipped with continuously visible preset, integrated pneumatic reset, 3-5 digit indication and convenient button setting. Our encoders are featured with compact design and it is equipped with 50 mm length for singleturn or multiturn versions. It is used for diagnostics LED, preset key with optical feedback and status message.