Has anyone seen an Allied piece of equipment similar to this one ? This is a Luftwaffe "Peilscheibe" used (I believe) to swing a compass., the device being clamaped to the cockpit of aircraft. The azimuth disc can be leveled, a spirit level being built in, the small optic , not sure how it all works, probably not that complicated which says a lot for me !!! Have only seen one photo of this device set up for use, , as i said clamped to the cockpit of a HE-111.