Press twice, the symbol appears in the function field on the display, and the
volume function activated as well.
Press to take the first length measurement (e.g. Length). Next get the width, then
heights, the final result is displayed in the summary line.
Press and to display additional room information such as ceiling/floor, surface
area of the walls, circumference.
5) Single Pythagoras
Press three times to activate the function,symbol appears in the function field
on the display as following to take No. 1, and No. 2 length, the result is displayed on the
summary line. Press to delete any measured length and then press to
re-measure.
6) Double Pythagoras
Press four times to activate the function, the symbol display in function field
as following to take No.1,2 and 3 length,