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Description: | This course indicator comprises a flexible rule (scaled in inches) pivoted in two 360-degree compass cards. The bottom card carries a magnetic variation scale and a compass error check scale, all in black. The top card has a red deviation scale and two setting arrows, all in red. The Sestrel-Luard was designed by Commander W.B. Luard, RN, as a replacement for the parallel rule for use with charts. The instrument allows one to plot true, magnetic or compass courses or bearings.
Inscription. Ex DI.92.
caption: Course Indicator | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | course indicators | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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SR-120
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