For testing chemical electrolyte solutions with battery holder inside the case. Using brass electrodes and a white LED lamp to indicate the current which is produced by electrolyte solution. Powered with 2 x 1.5 volt battery (batteries included). Overall dimension approx. : 50 x 27 x 140 mm, with case dimension : 50 x 27 x 74 mm. case made of polypropylene. |
