For sale is a Dynamics Research Model 29-11-B03-1000 Rotary Encoder. Pin-outs: A=Channel A, C=Channel B, E=Channel Z, I=V+, J=Ground. 2-13/16" Diameter of encoder body. 3.5" Diameter mounting flange. 3/8" Diameter input shaft with flat for attachment to your device. (2) Available. (1) Unit has a removable shaft extension (labeled 29L-11-B03-1000). Price shown in this listing is for ONE encoder.