Measuring Triangle (Meßdreieck) for German MG 34 and MG 42 Machine Guns Ki-61 Tony A few pages have a

A few pages have a pencil marking crossing out the section and some yellow highlights

25 inches diameter and ~3 inches deep

The N-6 was most widely used in Martin and Bendix upper turrets

"REF 6AA/624" (which may be an RCAF part number) and "CAT

Measuring Triangle (Meßdreieck) for German MG 34 and MG 42 Machine Guns Ki-61 Tony A few pages have aHere is a highly unusual and complicated instrument a German Medreieck (Messdreieck), or measuring triangle, used by MG 34 or MG 42 Machine Gun crews during WWII. The measuring triangle was used to optimize the fire efficiency of machine guns and to calculate distances. It may also have been used to support artillery aiming. We found a chatroom with the following information from "Roger": It resolves trig functions, but cannot directly calculate where