The German 1.5 m range finder(unfortunately, I missed to note the exact model !) (German:Enfernungsmesser) The coastal batteries never operated standalone. Based on the curvature of the earth and other factors, suitable vantage points were set where lookout stations were built. These lookout stations use to have such range finders, often longer ones(4, 5, 6, … Continue reading Range finder: German
Life is about being kinetic 