Technical Data
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7.1.3 Distance Measurement with Reflectors
Range
Atmospheric
conditions
Reflector
Range A
Range B
Range C
[m]
[ft]
[m]
[ft]
[m]
[ft]
Circular prism
1800
6000
3000
10000 3500
12000
3 prisms
2300
7500
4500
14700 5400
17700
360° prism
800
2600
1500
5000
2000
7000
360° Mini prism
450
1500
800
2600
1000
3300
Mini prism
800
2600
1200
4000
2000
7000
Reflective tape
60 mm x 60 mm
150
500
250
800
250
800
Shortest measuring distance:
1.5 m
Range A: Strong haze, visibility 5 km; or strong sunlight, severe heat
shimmer
Range B: Light haze, visibility about 20 km; or moderate sunlight, slight heat
shimmer
Range C: Overcast, no haze, visibility about 40 km; no heat shimmer