The Soviet Union 's participation in World War II began with the Battle of Khalkhin Gol, with Japan in Mongolia in 1939. Later that year, protected with the Molotov-Ribbentrop Pact, it invaded eastern Poland about three weeks after the Germans invaded the west of the country.he Soviet Union 's participation in World War II began with the Battle of Khalkhin Gol, with Japan in Mongolia in 1939. Later that year, protected with the Molotov-Ribbentrop Pact, it invaded eastern Poland about three weeks after the Germans invaded the west of the country.
An altimeter does not actually measure altitude directly, but rather just atmospheric pressure. So an altimeter is actually a barometer created for a specific purpose. The altimeter uses the changes in atmospheric pressure to determine the changes in altitude.
Altimeters measure MSL unless you have a radar altimeter which reads the terrain below an aircraft. In that case you are reading distance AGL. MSL ( mean sea level) For example. If the field elevation is zero feet, then the altimeter reads zero. But if you are on the ground at an airport with an elevation of 1000 feet above sea level, the altimeter will read 1000 feet.