encoder
Delta's Rotary Optical Encoder product lines include :
ROE-E Series
ROE-A Series
ROE-M Series
Incremental Type (Solid Shaft, Hollow Shaft, Through Hole Shaft)
Absolute Type (Solid Shaft, Hollow Shaft)
Commutation Type for Servo Motor (Hollow Shaft, Through Hole Shaft)
ROE-C Series
Specified Encoder for CNC Machine Tool