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Date: |
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Description: | Navigational computing instrument with two paper charts and two manuals.
Azimuth & time proof plate. Copper printing plate 317 x 241mm. Two pamphlets(1858 & 1878). Printed sheet. Printed card. The Sun's true azimuth can be read off at a glance for any altitude throughout the day: and when an altitude cannot be obtained, the approximate time from noon will answer the same purpose.
"The sun's true azimuth can be read off at a glance for any altitude throughout the day; and when an altitude cannot be obtained, the approximate time from noon will answer the same purpose."
AUDIT - object needs marking with its NAV number. Four unnumbered parts. Does the backboard need a part number - NO -- -> catalogue card doesn't mention backboard which I think was added at a later date for support/exhibiting. | Publisher: | "http://collections.rmg.co.uk/" | Subjects: | navigational instruments navigation computers | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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