Look for more specs in attachment. MIL-PRF-32144A (2007_0418) Clock, Aircraft, Electronic.pdf MIL-A-83419C (1979_1015) AAU-19 (34, 37) Altimeter, servo contr, auto press stby.pdf MIL-PRF-38214D (2008_0623) AQU-3 (5, 14) Compass, Magnetic, Mounted.pdf MIL-I-27193C Indicator, Attitude ARU-2B_A.pdf MIL-I-83034A(USAF) AQU-6_A Indicator, Horizontal Situation, pt1.pdf MIL-I-83034A(USAF) AQU-6_A Indicator, Horizontal Situation, pt2.pdf