technical atmosphere

Convert between technical atmospheres and other major units of pressure

A unit of pressure equal to one kilogram-force per square centimeter. Symbol, at. One technical atmosphere is approximately 0.967841 standard atmosphere or exactly 98.0665 kilopascals.

According to the current national standard in the United States¹, the technical atmosphere is not to be used. Kilopascals should be used instead.

In 1971, the European Economic Community directed that use of this unit cease by 31 December 1977

1. IEEE/ASTM SI 10™-2002.
American National Standard for Use of the International System of Units (SI): The Modern Metric System.
New York: IEEE, 30 December 2002.

See Section 3.3.3.

2. European Economic Community, Council Directive of 18 October 1971 on the approximation of the laws of the Member States relating to units of measurement (Directive 71/354/EEC), Annex, Chapter III.

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