WW2 UK War department Demolition set Mk1. Complete with crimping tool for fuses, combination pliers and 4 wooden pegs for making holes into demolition charges. The unit uses a galvonometer and a wheatstone bridge to ascertain the resistance of the firing circuit for the demolition charge if the resistance is too high the charge will not go off, lots of brass and bakelite internally very good condition box showing some wear but pretty good for nearly 90yrs old. Good collectors piece, hard to find, no reserve. Height:15.8cm Width:41.4cm Depth:18.7cm Weight:6.6kg Shipment with insurance.