On the left, three of the four cabinets of SINDAC, the SINS Data Analysis Computer of the Sperry Mk 3 SINS.  The fourth cabinet and IBM selectric I/O device, off frame left, are visible in slide 1.  On the right, mounted on the overhead, is the SINS binnacle.  In between, the cylinder mounted on the deck is the Mk-19 Gyroscope Master Compass.  [Admin]