Lt D.W. Gay's War Effort - Residual Deviations
This page from Lt D.W. Gay's 'War Effort' shows the residual deviations on a particular compass, showing how that varied depending on direction. The navigator would have had to take this into account when using the compas in question, or could end up some way off course.
Many thanks to Martin Hampton, the son in law of Lt. Gay, for sending us this material. These pages come from Gay's own private notebook which began with similar infomation to his flight log, but became more detailed, and also included a number of interesting items that had been pasted in.
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How to cite this article:
Rickard, J (4 January 2020), Lt D.W. Gay's War Effort - Residual Deviations , http://www.historyofwar.org/Pictures/pictures_war_effort_017.html