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It is used to measure indicated airspeed and true airspeed during the flight of an aircraft. The indicating units include “kph”, “mph”, and “knots”. Corresponding color scale zone could be marked up on the dial according to the aircraft's flying speed range.
Main Technical Data
MODEL |
MEASURING RANGE |
DISCRIPTION |
DIMENSION (mm) |
BK-3 |
20~160mph 20~140kn |
3 1/8"cut out |
ф 80×97 |
BK-3A |
20~140kn |
3 1/8"cut out |
ф 80×97 |
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BK-4 |
30~180mph 30~160kn |
3 1/8"cut out |
ф 80×97 |
BK-5 |
30~250mph 30~220kn |
3 1/8"cut out |
ф 80×97 |
BK-5A |
30~220kn |
3 1/8"cut out |
ф 80×97 |
BK-6C |
20~150mph |
Short case, Dense Scale |
ф 80×59 |
BK-7B |
20~120mph |
Short case, Dense Scale |
ф 80×59 |
BK-8D |
20~100mph |
Short case, Dense Scale |
ф 80×59 |
BK-9C |
20~80mph |
Short case, Dense Scale |
ф 80×59 |
BK-10 |
30~200mph 30~180kn |
3 1/8"cut out |
ф 79.4 × 97.3 |
BK-12 |
20~80kn |
Short case |
ф 80×59 |
BK-13A |
20~100kn |
Short case, Dense Scale |
ф 80×59 |
BK-14A |
20~120kn |
Short case, Dense Scale |
ф 80×59 |
BK-15 |
20~160kn |
3 1/8" |
ф 80×97 |
BK-23 |
20~140mph |
2 1/4"cut out |
ф 57 × 60 |
BK-25 |
40~260kn |
3 1/8" |
ф 80×97 |
BK-31 |
20~140mph |
Long case |
ф 80×97 |
BK-32 |
20~160mph |
Long case |
ф 80×97 |
BK-33 |
30~180mph |
Long case |
ф 80×97 |
BK-35 |
30~200mph |
Long case |
ф 80×97 |
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BK120-1A |
30~120kph |
2 1/4"cut out |
ф 57 × 60 |
BK120-1B |
30~120kph |
Short case |
ф 80×58 |
BK140 |
30~140kph |
2 1/4"cut out |
ф 57×60 |
BK150-1A |
30~150kph |
Short case |
ф 80×58 |
BK200-1A |
30~200kph |
Short case |
ф 80×58 |
BK240 |
30~240kph |
Short case |
ф 80×58 |
BK300 |
30~300kph |
Short case |
ф 80×58 |
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