Warmtoast. Thanks a million. just what I was after.:ok:

Not heard of Lucero before, but one point worthy of note is that Mk8 Rebecca readings were not displayed on CRT screens, they were shown on a 4 inch analogue instrument in the cockpit.
The instrument showed nautical miles distance from the beacon on a traditional clock type sweeping arm.
Integrated within the same instrument is a static pointer (aligned with the nose of the aircraft) with a moving pointer which swings to show divergance to the left / right of the signal beam.
Can't find a good close up photograph of ours to hand but can get one if required.