A surface on the drawing’s level
Select the option ‘on the drawing’s level' when you want to measure the volume from a surface which is located on the same level as the one depicted in the drawing.
To measure the volume from a surface on the drawing’s level, you have to fill in the ‘common height’ field. Once you specify the height, click ΟΚ and then draw the area you wish to measure by clicking consecutively on its nodes.(See Measuring in image Files/Types & Method of Measurement/Measuring area/Measuring surface area/On the drawing’s level).
During a measurement, the different
measuring methods (measuring volume from a surface on drawing’s level, from a
linear item, from counting objects) can interchange and combine.