An encoder with a light emitted editing wheel comprises an editing wheel defines a wheel body and {HEAD ~ a hole} in {TAIL ~ its middle portion} 
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An encoder with a light emitted editing wheel comprises an editing wheel defines a wheel body and { HEAD ~ a hole } in { TAIL ~ its middle portion }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL