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Published on
Today I scanned and posted the US Navy Hydrographic Office publication "A Functional Glossary of Ice Terminology" from 1952. It's 102 pages long and includes 110 photos of ice formations at sea and on land. With all those photos the file is over 200MB. It may be found with the reference document downloads.

​Go to Reference Document Download webpage.
Published on
Today I posted for download a set of instructions from Paulin in Sweden for their altimeters and barometers. The instructions are in multiple languages and may be found on the Paulin catalog webpage. They are provided courtesy of a collector in Catalonia.

Go to Paulin catalog webpage.
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