From my Royal Engineers Tunnelling Companies collection, this being a WW1 Tunneller's Electrical Line Testing Kit, a Galvanometer, for the wiring leading to the laid explosive charges. The testing and maintenance of such electrical wiring obviously being a crucial part the mine exploding process. The kit is quality wood and brass affair made by Muirhead and co ltd, and dated 1915. The Galvanometer itself is in very good condition.
This item is in the category "Antiques\Science/Medicine\Scientific Instruments". The seller is "discontinuedlines" and is located in this country: GB. This item can be shipped worldwide.