● Press the READ key for new measurement;
● Press the +/= key to enter the addition mode, and the “+” will appear on the display;
● Press the RM key to recall previous measurement for the addition (displayed on the
bottom of the display), and at the same time, the “M+” icon disappears and the stored
memories will be automatically eliminated;
● Press+/= key, the sum is shown on the lower portion of the screen.
4、Area
● Press MODE key to enter area mode, and the " "will appear on the display for calculation of a
room area;
● The length character “L” on the display will blink showing the length measurement you will be
firstly taking. Press READ key to take length measurement that is displayed on upper portion of the
screen. (Step 1);
● The width character “W” on the display will blink showing the next measurement to take. Press
READ key to take width measurement that is displayed on upper portion of the screen (Step 2);
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