How To Use the Geosphere As a Com­pass

WatchTime - - Close-up Montblanc 1858 Geosphere -

The bidi­rec­tional ratch­et­ing bezel (60 clicks) on the Geosphere can be used to find and mark the ap­prox­i­mate di­rec­tion dur­ing day­light hours.

From sun­rise un­til noon in the North­ern Hemi­sphere: hold the watch hor­i­zon­tally, point the tip of the hour hand at the sun and ro­tate the com­pass ring un­til S (South) is half­way be­tween the hour hand and 12 o'clock. The S on the bezel now points to South. At noon, the hour hand it­self should point south. From noon to sun­set: Point the tip of the hour hand at the sun and ro­tate the com­pass ring un­til S (South) is half­way be­tween the hour hand and 12:00. In the South­ern Hemi­sphere, hold the watch hor­i­zon­tally and point the 12 o'clock in­dex in the di­rec­tion of the sun. The north-south line is now half­way be­tween the hour hand and the 12 o'clock in­dex and the bezel can be ro­tated ac­cord­ingly. As an al­ter­na­tive, the Mont­blanc 1858 Pocket Watch Lim­ited Edi­tion (Ref. 118485, lim­ited to 100 pieces) is al­ready equipped with a built-in com­pass. It is pow­ered by the brand's new man­u­fac­ture Cal­iber MB M16.24, a beau­ti­fully hand­crafted mono­pusher move­ment with the iconic V-shaped bridge and Min­erva ar­row, based on the man­ual-wind Min­erva mono­pusher chrono­graph Cal­iber 17.29. The pock­et­watch can be po­si­tioned on a ta­ble with a stand or com­bined with a built-in com­pass that can be ac­cessed by open­ing it up to lay flat on a map. The back of the com­pass fea­tures an en­grav­ing of the four car­di­nal points, which are en­hanced with Su­per-lu­mi­nova. The case alone con­sists of more than 50 el­e­ments and can be trans­formed into a wrist­watch, thanks to a cus­tom­made brown “Sfu­mato” aged calf­skin strap with two pin buck­les and a cover. The 60-mm pock­et­watch is made of grade-2 ti­ta­nium, and the dial is crafted from Du­mortierite stone, named af­ter famed French ex­plorer Eugène Du­mortier, who dis­cov­ered it in the Alps moun­tain chain in 1881. It re­tails for €48,000 (ap­prox. $56,000).

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