"Found" my old Silva compass (packed inside a pair of old walking boots) - checked it with my iPhone's electronic version - seems absolutely spot on. What a simple piece of tech that actually works. Brilliant.
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I still have a pair of "Path-Finders" ( the ones the Cubs used to use with the Animal footprints on the sole, and a Compass embedded in the heel) - it too still works! ;-)
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I'm more impressed that your iPhone is absolutely spot-on, R.P.
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If you place a magnetic compass next to another one don't they interfere with each other?
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Well put it like this, they both think North is in exactly the same direction !!
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