The A-5 had the ability to be integrated with these bombsights. One hundred Lancasters following the Pathfinders used the flares as the target for their bombsights. In the postwar era, the development of new precision bombsights essentially ended. III, as well as older bombsights. These "tachometric" or "synchronous" bombsights were an area of considerable research during the 1930s. Between 1932 and 1938, the company produced only 121 bombsights per year. The first B-45As were not equipped with bomb fire control systems or bombsights. In tests, these bombsights were able to generate fantastic accuracy. Bombsights are sighting devices that are pointed in a particular direction, or aimed. The Norden remains one of the best-known bombsights ever invented.