How was altitude measured in the early 1800's by explorers.

Subject: How was altitude measured in the early 1800's by explorers.

Date: Tue Nov 16 13:19:31 2004
Posted by Marc
Grade level: nonaligned School: No school entered.
City: No city entered. State/Province: NJ Country: USA
Area of science: Science History
ID: 1100632771.Sh

Message:


I have been reading about exploration/mapping of the earth in the early 1800's.
Explorer's were climbing mountain peaks and stating that they were at an 
altitude of 2 kilometers above sea level. How did they make these measurements 
at that time?

Re: How was altitude measured in the early 1800's by explorers.

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