====WEIGHING BALANCE==== 1. Open one of the glass door of chamber, place weighing vessel (container) on the pan & close the door. 2. Wait for the display to stabilize & press the key (O/T). Appearance of stability mark ( → ) indicates stable state the display will read zero. 3. Open door & place the item to be weighed in weighing balance & close the glass door. 4. After display stabilize read the display.