A Geiger-tube based, low range, Model CCD-100-10 Survey meter. The meter, which measures 24 cm in length by 11.5 cm in width by 11 cm in height, was manufactured by Canadian Admiral Corporation Ltd. for use by Emergency Measures Organizations. It has a low range of 1-100 mR/h and a high range of 0-10R/h. This particular unit was used at the Chalk River Laboratories for training purposes.