Altimeter Sundo 6000 Germany 1950

Very cool piece this Altimeter for measuring the height you are at up to 6000meter.  The brand is Sundo type 6000 made in  Germany around 1950. It comes with it’s original boxes and instruction manual as well as it’s leather case and the original rope neck chain. You can set it manually to the proper start height. When you walk up the mountain the needle follows. It measures 6cm / 2 1/4 inch in diameter. The boxes and leather case are in great condition.