Convir SP2 hand-held battery-powered infrared non-contact thermometer (thermopile sensor type) by Calex, Leighton Buzzard, c.1997, range -18 to +400°C, Convir SP2 hand-held battery-powered infrared non-contact thermometer (thermopile sensor type) by Calex 1997
Thermalert Infrared Thermometer System, model LC814LBC, serial no. 5960, range 40-200° C, made by Raytek Inc. Santa Cruz, California, USA. (Sensing head incorporating pyroelectric sensor and signal processing system only, without power supply, indicator or cable.) Infrared Thermometer System 1980-1989
Convir Elixir 500 infrared non-contact thermometer system comprising panel mounting display and control unit, thermopile sensor with attached cable, and power cord, supplied by Calex, Leighton Buzzard, c.1997, range 0-500°C Convir Elixir 500 infrared non-contact thermometer system comprising panel mounting display and control unit 1997