10 Degree Rate Encoder
This encoder has wedges every 10 degrees, thus each complete revolution yields 18 pulses on your detector. (two wedges form the basis of one pulse). This is more useful for counting wheel revolutions than motor speed (see 30 degree encoder for motors). Each pulse represents .175 times the diameter of your wheel in motion. (so for a 6" wheel its 1.0472")
The image above is being shrunk by your browser to be 100 pixels across, its native resolution is 600 pixels so if you print it on a 600 DPI laser printer it will be a 1" encoder and at 300 DPI a 2" encoder.
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