Today I was at a small gun show. One of those that don't have to be 100% firearms. Awhile back picked up a nice egg beater style drill, and today I bought a wrench. A combo open/box wrench, forged steel, RAF on one side, which I do believe indicates Royal Air Force. WAD 190?? on the opposite, and on the jaws, A, (crown) M. Size markings of 3/8 and 5/8, in Whitworth size, with the 5/8 jaw close to 3/4 in. SAE size. Interesting bit of history. Fellow I bought it from, said he found it at a house auction last summer. At his booth was a fire axe, full size. The fire axe also came home with me. Anyone with RAF tools history?