Training Guide in Surface Weather Observations - Multiple Choices
Training Guide in Surface Weather Observations - Multiple Choices
Training Guide in Surface Weather Observations - Multiple Choices
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7.1 Altimeter Sett<strong>in</strong>g - APHPHPHPH CHAPTER 7<br />
PRESSURE<br />
A - International <strong>in</strong>dicator for altimeter coded <strong>in</strong> <strong>in</strong>ches of mercury.<br />
PHPHPHP H - Altimeter is coded <strong>in</strong> tens, units, tenths, and hundredths of <strong>in</strong>ches of mercury<br />
An altimeter sett<strong>in</strong>g is the pressure value to which an aircraft altimeter scale is set so that it will <strong>in</strong>dicate<br />
the altitude above mean sea level of an aircraft on the ground at the location for which the value was<br />
determ<strong>in</strong>ed.<br />
Figure 7-1. The Use of Altimeter Sett<strong>in</strong>gs.<br />
The altimeter sett<strong>in</strong>g is determ<strong>in</strong>ed directly from an altimeter sett<strong>in</strong>g <strong>in</strong>dicator. The follow<strong>in</strong>g is a list<br />
of common pressure-measur<strong>in</strong>g <strong>in</strong>struments:<br />
a. Precision Aneroid<br />
b. Altimeter Sett<strong>in</strong>g Indicator (ASI)<br />
c. Digital Altimeter Sett<strong>in</strong>g Indicator (DASI)<br />
d. Mercury Barometer<br />
e. Aircraft-type Altimeter [SAWRS only]<br />
f. PARASCIENTIFIC Inc., Digiquartz Pressure Transducer<br />
7-1