Aircraft altimeter



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Kollsman-type barometric aircraft altimeter set at 75 ft (23 m) showing a pressure of 29.87 in (1011.5 hPa). This altimeter is monuted in a console at a radio station.

Taken 03rd August 2005 at 17:58 MDT (03rd August 2005 at 23:58Z) at Cambridge Bay Airport, Nunavut, Canada.

Dansk: Nærbillede af en højdemåler af den type der bruges i mindre fly.

Instrumentet har tre visere, der aflæses omtremt som urvisere:

  • Den lange viser, som her peger på "knap 1", angiver antal hundrede engelske fod, i dette eksempel ca. 75 fod, eller 23 meter.
  • Den korte, brede viser angiver antal tusinde fod
  • Den lange, tynde viser der ender i en lille trekant øverst, angiver antal titusinder fod.
Højdemåleren virker ved at måle det statiske lufttryk, så for at kunne vise korrekt højde, skal den kende lufttrykket ved havets overflade. Man drejer på knappen nederst til venstre, indtil tallet i ruden til højre svarer til det relevante lufttryk.
Public domain This work has been released into the public domain by its author, CambridgeBayWeather. This applies worldwide.
In some countries this may not be legally possible; if so:
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EXIF data:
File name aircraft_altimeter.jpg
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Mime type image/jpeg
Camera manufacturer EASTMAN KODAK COMPANY
Orientation of image 1
Image resolution in width direction 230
Image resolution in height direction 230
Unit of X and Y resolution 2
Exposure time 33333/1000000 sec (0.033333)
F number f / 4.5
Exposure program 2
ISO speed rating 140
Compressed bits per pixel 2.35
Exif version 0220
Lens focal length 6 mm
Date and time original image was generated 2005:08:03 17:58:20
Date and time image was made digital data 2005:08:03 17:58:20
Meaning of each component 
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Focal length in 35 mm film 39 mm
Subject distance range 1
Interoperability index R98
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