The Hon. Charles Stewart Rolls was the first Englishman to fly over the English Channel and the first aviator to make a non-
This chapter is the eighth article in the series on Makers of Air History.
Pilots now depend far more upon their instruments than they did in the early days of flying, because flying in bad visibility or in thick cloud is not common. Instruments do not always tell the truth, but they are much more truthful in an aircraft than the sensations communicated to the pilot by changing attitudes at a time when visibility is poor and no horizon is visible. Some simple principles are incorporated in the instruments in which pilots rely, and these are explained in this chapter.