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
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