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  • ...=Merit Badge Field Guide |publisher=Downs Printing Inc | year=2003 | pages=Pages i-xi }}</ref> The number of badges available has been as high as 140 and, ...k | edition =Ninth edition | publisher=Boy Scouts of America | year=1979 | pages = Page 533 | id=ISBN 0-8395-3227-X}}</ref> Other mandatory badges include
    31 KB (4,844 words) - 17:47, 7 May 2012
  • ...are [[north]], south, east and west. A compass can be used in conjunction with a [[chronometer]] and a [[sextant]] to provide a very accurate [[navigation be considered a compass. A '''compass dial''' is a small pocket compass with a [[sundial]]. A '''variation compass''' is a specific instrument of a deli
    27 KB (4,048 words) - 20:34, 17 May 2020
  •]] and land surveying. GPS also provides a precise [[time transfer|time reference]] used in many applications including scientific study of [[earthquake]]s, ...n]] of the [[orbital node|ascending node]] (angle along the equator from a reference point to the orbit's intersection).<ref name="GPS overview from JPO">[http:
    57 KB (8,466 words) - 18:40, 31 May 2017