Cocraft CA640 Manual page 7

3.3 Adding or subtracting measurements
Suitable for situations requiring several measurements because of immovable obstacles.
Example: Adding measurements
1
1. Take the first reading. Select distance, area or volume. Then press
the reading temporarily.
2. Point the laser to the next area to be measured and press
Then press to add the current reading to the previous one.
3. The sum will be shown at the bottom of the display. The two added readings will display on top.
4. Continue adding readings by pressing
to the top.
Example: Subtracting measurements
1
1. Take the first reading. Select distance, area or volume. Then press
temporarily.
2. Point the laser to the next area to be measured and press
Press to subtract the current reading from the previous one.
3. The sum will be shown at the bottom of the display. The two previous readings will display on top.
4. Continue subtracting readings by pressing
move to the top.
2 3
again to measure.
and starting again from step 2. The sum will move
2 3
again to measure.
and starting again from step 2. The sum will
7
to save
to save the reading