The ECI 1116 is an absolute single-turn encoder with a 16-bit resolution while the ECI 1128 is a multiturn absolute encoder with 28-bit resolution. Both encoders are 38 mm in diameter and less than 28-mm long.
Heidenhain Corp., 333 E. State Pkwy., Schaumburg, IL 60173, (847) 490-1191, heidenhain.com