For Sale shipped to CONUSA for $95.00
If you like "analog" instead of digital (GPS readings), this Thommen 15000 ft Altimeter is a classic. It comes with a leather case I stitched myself with one of those Awl Stitchers we have ... all bought at one time or another.
As such, it is kind of a Beauty and the Beast combination. The beauty of the Thommen and the beast of my Frankenstein-isque leather case.
If I can find it, I may have the original box and manual. But the instructions are basically to look at it and read the elevation. At known elevations you can reset it for better calibration. If you are staying at a fixed elevation and you see the Altimeter changing, you know a weather change is on its way (a feature, not a bug).