One T.B.8 was fitted with a prismatic Bombsight in the front cockpit and a cylindrical bomb carrier in the lower forward fuselage capable of carrying twelve 10 lb (4.5 kg) bombs, which could be dropped singly or as a salvo as required.
Once the Lotfernrohr 7D bombsight was introduced — with a similar degree of accuracy to the top secret American Norden bombsight — more accurate bombing from 3,000 metres (9,840 feet) could take place with an error range of just 91 metres (300 feet).
The Carl Zeiss Lotfernrohr 7, or Lotfe 7, was the primary bombsight used in most Luftwaffe level bombers, similar to the United States' Norden bombsight, but much simpler to operate and maintain.
According to Doug Adams, black widow spider webbing had been tried for the crosshairs, but it could not withstand the variations in temperature to which the bombsight would be exposed.