Crown CT44038 Original Instructions Manual page 4

Basic（CT44038 or CT44039): Press power button shortly, the
distance value will display, Long press power button, continuously
measuring around flagpole till the value is stable, this value is the
distance to flagpole.
Upgrade version:It do not have this mode
●"Fog" mode
1. Function Principle:
Because the fog will reflect the laser generating, so the fog will not
be able to measure distant targets.
Filter out the laser reflector fog errors caused by distance(d1=30m),
thus ensuring the long-distance measurement range volume.
2. LCD display:
Basic（CT44038 or CT44039) and upgrade version: Press power
button shortly, the distance value will display base on fog.
●"Angle finder" mode
1. Function Priciple:
Adopt angle sensor to measure angle.
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2. LCD display:
Basic（CT44038 or CT44039) : it do not have this mode
Upgrade version: Press power button shortly, the distance value and
height value will display rotational
●"Speed" mode
1.Function Principle:
Adopt Pythagorean theorem to calculate the height.
2. LCD display:
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