No. Transit Instrument Electrically Connected with the Chronograph. —Winkelmunn, Photo.
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https://paperspast.natlib.govt.nz/periodicals/P19111002.2.19.2
Bibliographic details
Progress, Volume VI, Issue 12, 2 October 1911, Page 839
Word Count
10No. Transit Instrument Electrically Connected with the Chronograph. —Winkelmunn, Photo. Progress, Volume VI, Issue 12, 2 October 1911, Page 839
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