Coulombmeter With Rechargeable Battery, Power Supply: 9 V Rechargeable Battery Via Dc Co-Axial Power Socket, Load Current:Max. 500 Ma, Connectors: 4-mm Safety Sockets, Dimensions: 105 X 75 X 35 mm3 Approx, Consumption Can Be Displayed By Means Of A Voltmeter.
Cover, Material: Rugged ABS plastic, For E/M Apparatus, Protects the bulb of the e/M Apparatus during transport, Provides viewing of the e/M Apparatus in lit classrooms