Microwave Spectrum Analyser comprising RF Section Model 8551B, Serial No. 825-02501, and Display Section Model 852A, Serial No. 813-02396, by Hewlett Packard, United States, c. 1965, complete with four interconnecting leads, two mains leads, a Model 908A coaxial termination, and two operating and service manuals Microwave Spectrum Analyser comprising RF Section Model 8551B 1965
Laben™ Model 100 multichannel 'Spectrascope' spectrum analyser with separate power lead and manual by Labatori Elettronici e Nucleari, Milan, Italy 1967-8. Used for research at the Chemistry Department of Loughborough University Model 100 multichannel analyser "Spectrascope", 19 1967-1968
H.f. spectrum analyser type OA 1095 (serial no. 150) Post Office design, 1951, manufactured by Marconi Instruments Ltd., from 1958. Complete with spare CRT and Polaroid camera H.f. spectrum analyser type OA 1095 (serial no. 150) 1951-1978