Measuring Triangle (Meßdreieck) for German MG 34 and MG 42 Machine Guns A4 Skyhawk Here is a combination Airspeed

Here is a combination Airspeed Machspeed Indicator

evidence of a year of manufacturing of 1941

as the aircraft's guns have been fired

indicative of a manufacturing year 1943

This example is from the personal collection of RAF Wing Commander William James Hunter via his son

Measuring Triangle (Meßdreieck) for German MG 34 and MG 42 Machine Guns A4 Skyhawk Here is a combination AirspeedHere 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