LINE DRIVER (12-30 VDC MAX), 60 PPR, QUADRATURE, BASE FLANGE: W/BLIND HOLES FRONT, BACK & BOTTOM, PRECISION ABEC 3, FILM SEAL. Shaft Type Double ended shaft. Shaft Dia Slotted shaft for screw jacks. Electrical Output Quadrature - 7272 CMOS diff.
eBay