VD-20 Altimeter Added to the Collection
A Soviet VD-20 two-pointer aircraft barometric altimeter, dating from around 1955, has been added to the collection.
The collection has been expanded with a Soviet VD-20 aircraft barometric altimeter, manufactured around 1955. Designed to measure relative flight altitude up to 20 km, the instrument uses a two-pointer mechanical system driven by an aneroid capsule assembly.