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Seagraph, Seavisa and Visagraph Echo Sounders
Object ID1113166
Date0000-00-00
Works NoSD 16/49
Accession No
Status
Category Manuals
Collection IDMarconi
Made ByMarconi International Marine Co. Ltd
Made InChelmsford, England
DescriptionInstruction manual for the Seagraph, Seavisa and Visagraph Echo Sounders
LocationUnknown
ConditionUnknown

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