WW2 German W.M.35 (Winkelmesser) Mortar & Artillery Clinometer

A WW2 German Winkelmesser 35 in good clean working condition, still with much of its original paint finish, commonly used by German heavy artillery. Maker coded ''bvu'' (Franz Kuhlmann of Wilhelmshaven), measures 12cm along the base. A heavy little item, clinometer only.