fiducial point

views updated May 11 2018

fiducial point
1. The temperature at which the atmospheric-pressure scale of a particular barometer reads correctly. The temperature at which this is so in latitude 45° is called the standard temperature of that barometer. At other temperatures and other latitudes, corrections must be applied.

2. The fixed point (indicated by a pointer) that is the zero of the scale of a Fortin barometer.

fiducial point

views updated May 08 2018

fiducial point
1. Temperature at which the atmospheric-pressure scale of a particular barometer reads correctly. The temperature at which this is so in latitude 45° is called the standard temperature of that barometer. At other temperatures and other latitudes, corrections must be applied.

2. Fixed point (indicated by a pointer) that is the zero of the scale of a Fortin barometer.

More From encyclopedia.com

About this article

fiducial point

All Sources -
Updated Aug 08 2016 About encyclopedia.com content Print Topic

You Might Also Like