4.2. By determination of single unit massIf unit mass of counted objects is not known, please act as described below:− Place a container for counting pieces on the weighing pan, and pressbutton TARE− Using numeric keyboard of the indicator, insert quantity of pieces(reference mass), which will be used to calculate single piece massCAUTION:reference mass has to be natural number.− Place counted pieces on the weight pan of the scale− Press button− Display described as UNIT WEIGHT will show unit mass of a sample− Display described as COUNT will show quantity of details, used forcalculation of unit mass− Add another details, their quantity will increase automatically.Fig. 6 – counting pieces 2− take the weighed elements off the pan. In order to perform anotherweighing / counting, insert another unit mass and proceed as describedabove.− Going back to weighing mode is possible after pressingbutton for CANCELING- 8 -