Gamma Scintillation Ratemeter type 1597A by General Radiological Ltd
1965 onwards
Scaler-Ratemeter SR3 by Nuclear Enterprises, 1973.
1973
ratemeter
Nuclear Enterprises ratemeter
circa 1965
Ratemeter type 1368A S/No.170 by Ericsson Telephones Ltd
1959
Ratemeter unit type 1355B by Fleming Radio Developments Ltd
1956
Ratemeter type N 522C by Ekco Electronics Ltd.
1951-1960