Measuring Triangle (Meßdreieck) for German MG 34 and MG 42 Machine Guns A4 Skyhawk

Measuring Triangle (Meßdreieck) for German MG 34 and MG 42 Machine Guns A4 SkyhawkHere 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

evidence of a year of manufacturing of 1941

and P2 Neptunes

evidence of manufacturing year of 1948 for a USAF order

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

Once switched On

as the aircraft's guns have been fired

All pages appear to be in place and intact (no tears or missing pages have been identified)

This 60-page book published in 1970 covers the development and operational history of the Grumman TBF/TBM Avenger Torpedo Bomber

Heinkel HE 111

indicative of a manufacturing year 1943

Here is a combination Airspeed Machspeed Indicator

or patrol observer