I love how you typed that all like it is such a normal thing to know and do hahaOhh all you need is some ionic solution, like window cleaner. Then take two pencils and split then and take the graphite rod out. Then get 2 lines of metal wire (metal coat hangers will do) and connect each of the graphite rods to the ends of the hangers. Then dip the graphite rods in the window solution and take the other two ends of the coat hangers and attach them to the positive and negative terminals in the battery holder and bobs your uncle! A working scale