An AECL-designed, AEP2140 beta/gamma survey meter. The meter has a built-in front support to make it free-standing and measures 36 cm overall in length. The 3.5 cm diameter probe extends 14 cm beyond the main body of the instrument and has a removable cap to both protect the window and to allow discrimination between beta and gamma radiation. No detailed information has been located on the detector(s) used in this monitor. The full-scale reading has three ranges – 25 mR/h, 250 mR/h, and 2.5 R/h. There is also a logarithmic scale position for the switch. These meters were widely used at Chalk River during the 1960-1970 era.
