It is used to measure and indicate the absolute and relative barometric altitude of aircrafts. The indicating unit could be either ¡°m¡± or ¡°ft¡±. Indicating units of air pressure correction could be ¡°mmHg¡±, ¡°inHg¡±, ¡°inHg¡± or ¡°mb¡±.
MODEL |
MEASURING RANGE |
DISCRIPTION |
Dimension (mm) |
BG-3 |
-1000~20000ft 28.1~31.0inHg |
Three pointer, Ten thousand pointer in plate form |
§æ 80¡Á105 |
BG-3A |
-1000~20000ft 950~1050mbar |
Three pointer, Ten thousand pointer in plate form |
§æ 80¡Á105 |
BG-3B |
-1000~20000ft 28.1~31.0inHg |
Three pointer, Ten thousand pointer in needle form |
§æ 80¡Á105 |
BG-3E |
-1000~20000ft 950~1050mbar |
Three pointer, Ten thousand pointer in needle form |
§æ 80¡Á105 |
BG-3G |
-1000~20000ft 950~1050mbar 28.1~31.0inHg |
Two baro-windows, Three pointer ten thousand pointer in needle form |
§æ 80¡Á105 |
BG-3H |
-1000~20000ft 950~1050mbar 28.1~31.0inHg |
Two baro-windows, Three pointer ten thousand pointer in plate form |
§æ 80¡Á105 |
BG-4 |
-1000~35000ft 28.1~31.0inHg |
Three pointer ten thousand pointer in plate form |
§æ 80¡Á105 |
BG-4A |
-1000~35000ft 950~1050mbar |
Three pointer ten thousand pointer in plate form |
§æ 80¡Á105 |
BG-7 |
0~5500ft 28.1~31.0inHg |
Single pointer |
§æ 79.6¡Á85 |
BG-9 |
0~5000ft 27.0~31.0inHg |
2 1/4"cut out |
§æ 57¡Á78.5 |
BG-10 |
0~10000ft 27.0~31.0inHg |
2 1/4"cut out |
§æ 57¡Á78.5 |
BG-11 |
0~10000ft 950~1050mbar |
Single pointer |
§æ 80¡Á85 |
BG-11A |
0~10000ft 28.0~31.0inHg |
Single pointer |
§æ 80¡Á85 |
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BG1 |
0~1000m 950~1050mbar |
2 1/4"cut out |
§æ 57¡Á78.5 |
BG3 |
0~3000m 910~1050mbar |
2 1/4"cut out |
§æ 57¡Á78.5 |
BG6-1A |
0~6000m 900~1050mbar |
2 1/4"cut out |
§æ 57¡Á78.5 |
BG6-2 |
-300~6000m 700~1040mbar |
3 1/8"cut out |
§æ 80 ¡Á52.5 |
BG10-2 |
-300~10000m 600~1040mbar |
3 1/8"cut out |
§æ 80¡Á129.5 |