The ASR Display, located just above the PAR display is a more traditional-looking display, in order to acquire inbound aircraft
and position them where the Precision Approach Radar(PAR) Operator was waiting to direct the the last ten miles, to the runway.

In this picture, taken at Nha Trang, RVN, in 1969, the display overlay is "marked-up" with restricted areas which helped us to avoid
putting aircraft in harm's way