Show clever thief detector valuable metal lad had a habit babit of disappearing from a german factory recently so a clever scientific thief detector was rigged up by the physicists connected with the works at the end of the days work each employee was required to remove his knife and other metallic personal possessions from tile him pockets and pass through a specially constructed gateway this was wan so wired that any concealed metal being taken away illicitly would make itself known by inducing a current in a device that emitted a loud warning signal for the guards benefit the loss of metal has decreased markedly since the construction of the device i |