1. This may explain some of the magnetic variations that mystified old-time sailors. 2. Borri also made observations on the magnetic variation of the compass. 3. :Airport navigation charts are a good source for magnetic variation . 4. This permitted mariners to determine the time and magnetic variation in a single step. 5. In 1530, Alonzo de Santa Cruz produced the first map of magnetic variations from true north. 6. Wright translated into English " De Havenvinding " ( 1599 ) by the magnetic variation , was actually Wright's work. 7. The 262 page volume is complete with illustrations, coordinate tables, notes on magnetic variation and some bathymetric sounding information. 8. They do not consider the value of the magnetic variation of the place at all while using a magnetic Compass. 9. Mounted on aircraft, magnetometers such as this one are capable of detecting magnetic variations as minute as one part in 100 million. 10. Though I'm not sure, I'm guessing that this new system may allow easier navigation ( eg regarding determination of magnetic variation with compasses)
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