ATM. Portable single channel carrier equioment type P.B. 1/1, operating instructions, engeneering bulletin 2250 ATM. Street traffic control signals The automatic coil winder & electrical equipment co. Ltd. Model 7 universal avometer, Working instructions for the instrument and its accessories Scientific handicraft : an illustrated and descriptive catalogue of scientific apparatus manufactured and sold by John J. Griffin & Sons, makers of scientific instruments ATM. Rythmatic control, enginering bulletin 2185 ATM. Vehical actuated detectors ATM. Electric vehicle actuated signals, From Cornhill to Paiccadilly circus Barr & Stroud. Infra-red materials Barr & Stroud. Cryogenic air supply unit QK4 Barr & Stroud. Laser rangefinder Barr & Stroud. Thermal imaging sensor head Barr & Stroud. Thermal imaging fire control systems