Krupp mountain sight
mountain sight consisted of a short telescope bent at right angles, mounted
on a rocking bar. One end of the bar is supported on a spiral cam; on the
same axis as the came was a drum about
The telescope had a field of about ten degrees, and it was of low magnifying power. On looking down into it from a distance of a few centimetres the layer saw a brightly illuminated picture of the foreground, with a pointer in the middle of the field.
The gun was sighted on the right-hand side at the extreme rear end of the cradle, well clear of the wheels. The telescope was inclined to the right, so that the layer had not to put his head behinf the recoiling gun.
SOURCE : BETHELL. Henry Arthur : Modern Guns and Gunnery,