Check the listing for details. 1930s Testometer Laboratories Pocket Size Conductivity Tester Vintage. Condition: New – Open box. Listed at 59.95 USD. 1930s Testometer Laboratories Pocket Size Conductivity Tester Vintage. For sale and accepting offers on this vintage testimeter Laboratories pocket size conductivity tester. This is a vintage electronic conductivity testing device it requires one C cell battery in order to work properly. This vintage item is in great condition and would be an excellent Conversation Piece or just the desired piece to have for a vintage electronic hobbyist Please note, Buyer assumes all risks of pieces in shipping. All sales are final, no returns, and no refunds. Buyer assumes all risk of parts and assemblies there within. Buyer assumes all risks of shipping, unless otherwise arranged for insurance. These parts are being sold as is.