|Compass Deviation Check Form.
Valuable on long passages to check the deviation of a steering compass.
Encapsulated A4 Sight form. One side has a completed example with
notes explaining where the information is obtained and how it is used.
Designed for use with the Rapid Sight Reduction Tables previously
called the Air Tables AP3270. Vol. 2 or 3 and the Nautical Almanac.
Can be written on with 2B pencil.