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I purchased the Silva Expedition S as I had (temporarily it turns out) lost my original 1981 15TDCL compass which is its product ancestor. After a quality control issue (Silva's - not Woodlore's) and some product exchanges I received my final replacement today. The compass is well made, with components that are designed to work well in demanding navigation conditions. The model includes a full range of map scales and a magnifier in the base plate, there is a clinometer for accurate slope (or the dip of geological strata) measurements together with a useful slope card with which to quickly assess slope angle direct from a map. The sighting mirror has a smooth but firmly fixed hinge enabling it to be used for accurate following of a bearing. The luminous strips, once 'charged' in day light are well placed for use in the dark. The lanyard has a built in metal tag for adjusting the declination (there is a micro screw in the bezel housing for this) to accurately dial in local magnetic variation - and features a range of metric and imperial map scales for measuring route distance on maps. Whilst you can spend more on a sighting compass from Suunto, the Expedition S is a decent quality tool for navigating in all conditions. Finally I would like to add that Woodlore displayed very good customer service regarding the product quality control issues I experienced at first and I am very pleased to recommend them as a great company to purchase specialised outdoor living products from.
Tim Morris22nd October, 2022