Better yet, these measurements were being carried out on the bomb run and required no manual calculations, which not only dramatically simplified the bomb aimer's task, but gave them much longer to adjust their measurements and thus settle at a much more accurate result.
Better yet, these measurements were being carried out on the bomb run, not before it, helping eliminate inaccuracies due to changes in the conditions as the aircraft moved. And by eliminating the manual calculations, the bomb aimers were left with much more time to adjust their measurements, and thus settle at a much more accurate result.