Operation; Inserting Batteries; Measuring Distance - Cocraft CA640 Manual

3. Operation

Important
• Distance can be measured from the front or back of the device or from the tripod
mounting point. Make sure that the area between the meter and the measured surface
is free from obstructions.
• Make sure that the area between the meter and the measured surface is free from obstructions.
• If you need to measure the distance to a surface which is soft, irregular or too small,
place a piece of cardboard in front of the surface.
• The device cannot measure against or through any glass surfaces. Reflections from such
measuring may be faulty due to reflections.

3.1 Inserting batteries

1. Open the battery cover on the bottom.
2. Insert two AA/LR6 alkaline batteries according to
the polarity markings in the battery compartment.

3.2 Measuring distance

Note: Always make sure that you have chosen the correct measuring units before measuring.
The unit of measure is displayed on the lower right corner of the screen (see Selecting measuring
units). Make sure that a reference point is chosen (see Changing measuring reference).
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1. Press to turn on the distance meter and laser. The laser indicator will display when
the laser is on.
2. Turn on the backlight when needed. Press
3. Point the laser onto the area to be measured and press
(a short beep will be heard once the measurement has been taken).
4. The measured distance will be shown on the display.
5. If no button is pushed for 30 seconds, the laser will turn off automatically and after 3 min
the device will also turn off.
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once to measure
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