Mark II
The Mark II version dispensed with the use of relative speeds and set the guide bar on a sliding speed scale, thus allowing the speed of the guide and the speed of the own ship to be set independently. The device was constructed largely of brass.
Read more about this topic: Battenberg Course Indicator
Famous quotes containing the word mark:
“Only a still place
and perhaps some outer horror
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a mark no changing it now
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—Hilda Doolittle (1886–1961)