TitleChronometer - crystalAlternative TitlePhysics Museum Collection Alternate IDH.PM.2006.111Date1960FormatInstrumentMediumMetalDescription
Crystal chronometer used by Seismology.
Large clock face on front of main item which sits on metal frame with shelf which houses electrical components, second item is a power supply 20V-30V DC 500 MA.
Made by Automatic Telephone & Electric Co. Ltd, England.
