What Units Do Barometers Measure In?

••• Hemera Technologies/PhotoObjects.net/Getty Images

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.

Related Articles

How to Convert mm Hg to in Hg
How to Convert Barometric Pressure to mmHg
How to Convert Kilopascals to Joules
How to Find Partial Pressures
What Does the Barometer Do?
Difference Between Barometer, Manometer & Anemometer
Weather Barometer Facts
Difference Between a Mercury & Aneroid Sphygmomanometer
What Are the 2 Types of Barometers?
What Is a High or Low Reading in Barometric Pressure?
How to Convert PSI into KPa
How to Calculate Volume of a Circular Cylinder
How to Convert MPa to N/mm^2
How to Convert kPa to kN/m
Weather Instruments & Their Uses
302 Vs. 304 Stainless Steel
How to Convert PSIs to KPIs
How to Calculate the Diameter of a Circle From a Linear...
How to Find Relative Barometric Pressure
Types of Hygrometers

Dont Go!

We Have More Great Sciencing Articles!