State Library of South Australia

Edwin Sawtell [B 9040] • Photograph

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Summary

Edwin Sawtell is depicted in the first photograph and the second shows the surveyor's transit instrument used for determining exact time of South Australia before the establishment of the Observatory in 1860 and the time ball tower at Semaphore in 1875. Greenwich Mean Time was relayed to vessels moored in the Port's inner harbour so the shipboard chronometers could be rated and corrected. This determined longitude and aided navigation. Sawtell also provided daily barometric and temperature data to local newspapers.

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Physical description

Photograph; 15.9 cm x 7.5 cm

Dates / Publication details

Approximately 1880

Collection

Part of Portrait Collection

Subject

Sawtell, Edwin, 1817-1889

Catalogue record

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Digitisation information

Date

16/11/2005

Format

image/tiff

Resolution

2,121 x 4,508 pixels (9.6 MP)

Size

28.71 MB

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