Grayhill of Illinois has Series 62AG, 62NG and 62SG Optical Encoders, which feature optical switching technology which provide  tactile feedback to the user. The encoders are used in healthcare electronics, communication systems, navigation devices, precision test and measuring equipment, sound editing consoles, and automotive applications. Grayhill says its encoders have reduced shaft wobble; increased durability, including side load, impact load, ...

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