Understanding the Measurement Units of Barometers

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<h3>Understanding the Measurement Units of Barometers</h3>

A barometer is an instrument used to measure air pressure and track weather systems. The most common unit of measurement used in barometers is the millibar (mb).

Fact

A millibar is a form of metric measurement, with one millibar equaling one one-thousandth of a bar or 100 pascals, which is equivalent to one newton per square meter.



Use

Millibars are used to measure atmospheric pressure or altitude. Normal atmospheric pressure measures 1,013.2 millibars.

Features

The two types of barometers are mercury and aneroid. In a mercury barometer, millibars measure how high the mercury column climbs a vertical glass tube. Aneroid barometers don’t use liquid of any kind, instead employing a flexible-walled evacuated capsule.

Types

Aside from millibars, other units of measure used in barometers include pounds per square inch, pascals and inches of mercury.

Function

A highly sensitive unit of measurement, one millibar indicates a change of one tenth of one percent in the atmospheric pressure.



Dave Pennells

By Dave Pennells

Dave Pennells, MS, has contributed his expertise as a career consultant and training specialist across various fields for over 15 years. At City University of Seattle, he offers personal career counseling and conducts workshops focused on practical job search techniques, resume creation, and interview skills. With a Master of Science in Counseling, Pennells specializes in career consulting, conducting career assessments, guiding career transitions, and providing outplacement services. Her professional experience spans multiple sectors, including banking, retail, airlines, non-profit organizations, and the aerospace industry. Additionally, since 2001, he has been actively involved with the Career Development Association of Australia.