This neat little gadget was bought together with a whole load of British officer's WW1 equipment. It measures miles and kilometers (on a large scale map, I suspect) and still functions, after a fashion, though the wheel is stiff and probably needs oilling with a fine machine oil. The compass on the other side works nicely.

This grenade is one of the classic trench weapons of WW1. It was the first easily man portable factory production in this line, all the earlier stuff being utilisations of old gun barrels, etc. This grenade (approximately 16 cms long and made of cast iron) is stamped 'RhMF' (Rheinmetalfabrik) and is minus its fins, propellant and primer.