Lotfernrohr 7

[2] During a visit to Germany in 1938, Lang conferred with German military authorities (Oberst Nikolaus Ritter of the Abwehr) and reconstructed sketches and plans of the confidential materials from memory.

[1] In the Lotfe 7, a similar set of gyroscopes provided a stabilized platform for the bombardier to sight through, although the more complex interaction between the bombsight and autopilot of the Norden was not used.

In most installations, like those in the Junkers Ju 88 or Heinkel He 111, the tube ended in a fairing under the fuselage with a protruding flat window in front.

In other cases, like the Arado Ar 234 or the prototype bomber conversions of the Messerschmitt Me 262, the tube was open to the air, mounted so the mirror window was almost flush with the fuselage line.

There was an attempt to use them in the B-25 Mitchell to replace the much more complex Norden, but the Lotfe 7 interacted badly with the Soviet-designed Si-1 autopilot and the problems were never fixed.