The WW1 - WW2 Clinometer, Palmer, Mk IV from 1940 is an original, authentic piece of militaria from the United Kingdom during World War II. This collectible item holds historical significance and serves as a tangible piece of the conflict. It would be a valuable addition to any collection focused on military history and artifacts from this time period. General Description Full Name: Clinometer, Palmer, Mk IV. Typical Year: Dated 1940. Material: Bronze (heavier and more robust than later steel/alloy models). Use: Used to measure the elevation/depression angle of artillery, mortars, or heavy machine guns. Scale: Degree graduations to allow for indirect fire or precise adjustments. Bubble Level: Built-in for calibrating the measurement.