Erich
the old Sage
it depended on how the pilot configured his overhead sight within the canopy and the angle that he wished for the single or twin installation. the LW NF that came with the SM installation was factory set and then as used could then be re-set deemed as for the crews wishes by the ground crews. I have some very interesting information when I conversed with NF ace P. Spoden about this and to a lesser extent ace H. Rökker and BF Karl-Johanssen to "Tino" Becker when they did use it, their latter Ju 88G-6 did not have Naxos or SM installed.