London had suffered 57 days of non-stop bombing from the Luftwaffe in 1940 – it was relentless. There must have been many bombs that failed to explode, so there must have been a ready made market for such a device. This advert for an Incendiary Bomb Detector appeared in the local Bromley Times newspaper in July 1941. Incendiary Bomb Detector Incendiary Bombs can be rendered non-effective If they are Dealt with Promptly This can be done if you install a detector. Many Installations completed – automatic – inexpensive DON’T DELAY…