Used Thommen Altimeter to 21,000 feet. All sales are final. The item “Thommen Altimeter up to 21,000′ feet leather case RARE thomen Swiss Switzerland” is in sale since Saturday, July 10, 2021. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “organizeable” and [...]