This paragraph on the evolution of bomb sights lends credence to HTC's choice of easy mode bombing.
A more controversial aspect was how the American, British and German sights compared. The Norden, the SABS and the German Lotfe 7D or H were all tachometric sights used in the sitting position Norden and Lotfe 7D/H both had direct connections into the automatic pilot systems. so that in the run up to the target the bomb-aimer effectively flew the aircraft without the intervention of the pilot. Work on a SABS Mk lll was cancelled in 1943 which may have had this facility.
The SABS Mk llA uses a simpler system in that was connected to an instrument called the Bombing Direction Indicator(BDI) which was mounted on the pilot’s instrument panel. The BDI indicated to the pilot the amount of turn required left or right to bring the sight on to the target.
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Before the Norton and radar bombing. Most of the countries used some variation on this technology. The US and other countries purchased the British bomb sight shown here. Many guns sights and bombsights for japan were copies of German technology with a Japanese twist. Towards the end of the war japan started producing optical bombsights like the type 99 reflector bombsight. By that time they didn't have much of a bombing campaign.
British Course Setting Bomb Sight.



German


Japan G3M and G4M bombers

