(image gently taken from Neal web site)
early SD with only range of tagets for air contact, SJ for surface (A-scope in the 1942 and adding PPI in 1943) not that crap with unreadeable range numbers that i dunno if they are miles, yards, feet, or light years and i must guess bearings.
C'mon guys we are in 2007 and at least if you puts smiles on the right screen please add a clone of puzzle bubble on the left so i can spend some time playing something funny.
tnx and best regards