Richtkreis 0-5800 scale indirect fire Turkish howitzer sight : Lieutenant H I Wikner, 7 Light Horse Regiment, AIF

Brass indirect fire gun sight, as fitted to German manufactured howitzers. The sight is shaped in the form of a 180 degree protractor. Two scales are engraved around the curved edge. These are etched in Turkish characters with numbers graduated on the outer scale from 0 to 2900, and on the inner scale from 2900 to 5800. The 360 degree mark is registered at 5760. This sight was common to all howitzers in the schwere Feld Haubitze series (such as the 15cm s.F.H. 93) and was fitted on a flat area on top of the weapon's breech ring. Attached to the brass scale is a swinging flat steel arm. Fitted to each end of this steel arm are two spring loaded steel vanes. One vane has a milled peep hole for viewing and lines up with the opposite, which has a hairline sight made of wire.

This gun sight was collected by Halfdan Ivanhoe Wikner, while serving with the 7th Light Horse regiment at Gallipoli after the war. After the Armistice, the 7th Light Horse and Canterbury New Zealand Mounted Rifle Regiment were sent to Gallipoli. They camped At a former turkish hospital at PLACE. Wikner was ordered to go and survey the northern sector of Gallipoli with 'A' Squadron to confirm information submitted by the Turks. They found everything the Turks listed, plus an engineers dump with entrenching material (p 110 of unit history for more details)

During the search the found a sunken area south east, and not far from Gaba Tepe, where "Beachy Bill" fired from. The gun there was described as an old type of weapon and Wikner souvenired this gun sight, which was ranged at Anzac Cove, from it. The gun itself was later removed.