optical encoder - Business Directory https://biz.prlog.org/tag/optical-encoder/ optical encoder - Free business directory on PRLog.Org, latest companies listed first. 60 Grayhill, Inc. https://biz.prlog.org/Grayhill/ Grayhill, Inc. is a leading designer and manufacturer of customized user interface solutions, switches, I/O modules, and electronic components. Thu, 23 Jul 2009 18:26:59 GMT