....This is the compass we use, recommend, and provide to the students in the classes we teach -
Silva Ranger
I've owned a Silva Ranger for many years....decades now, I guess. It lives in my daypack, so it's always with me on a hike. (This is probably the second one I've owned -- the first one replaced when an air bubble in the liquid got too big and interfered with the needle.)
I learned of the Ranger during my college summers for the US Forest Service surveying road routes -- it's what they used (when not using transits/theodolites).
I learned map & compass skills in the Boy Scouts, so...getting on towards half a century ago now. Same skills still apply in this millennium.
I don't remember the last time I used my compass for actual navigation -- yes, I use and like modern electronic tools. But just a couple years ago...
...While in the White Mts of California I used my Silva Ranger to take a bearing (enabled by the Ranger's mirror as Mr 3pin points out) on an unknown peak in the Sierra -- across that 10,000-foot-deep chasm of the Owens Valley -- and then laid my Ranger on a paper National Forest map of the region, applied that bearing from my known location, pointing with the edge of the Ranger, and identified the peak!
Many years ago, while backpacking in the Trinity Alps of northern CA (long before GPS existed), I did use my compass -- along with a 7.5-minute USGS quad map -- for actual navigation: I took bearings on 2 known peaks and triangulated to find where I was along the trail. I know there were other times, too, but I still remember that one, for some reason...I can still picture that bare mountainside that made sighting on landmarks easy.