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Assume magnetic variation is 5 °w and that 1mb = 30 ft.
You will need a pen, ruler, protractor and a ICAO 1:500 000 aeronautical chart of Southern England & Wales.
Task – out and return from LASHAM. Draw a line on the chart from LASHAM (N51 11.359 W, W001 01.899) to DIDCOT Power Station (N51 37.297, W001 15.658).