Unable to obtain the Norden, the RAF continued development of their own designs. Having moved to night bombing, where visual accuracy was difficult under even the best conditions, they introduced the much simpler Mark XIV bomb sight. This was designed not for accuracy above all, but ease of use in operational conditions. In testing in 1944, it was found to offer a CEP of , about what the Norden was offering at that time. This led to a debate within the RAF whether to use their own tachometric design, the Stabilized Automatic Bomb Sight, or use the Mk. XIV on future bombers. The Mk. XIV ultimately served into the 1960s while the SABS faded from service as the Lancaster and Lincoln bombers fitted with it were retired.