Aiming apparatus for mortars with tritium-gas illumination

摘要

It consists of an aiming apparatus called goniometer for mortars, in which the illumination of its fundamental elements such as graduations, levels, etc. is achieved by the inclusion of tritium capsules and by enclosing the hydrogen isotope (tritium) with a small quantity of phosphorous the energy emitted by the tritium in the form of beta radiation excites the phosphorous which reduces the emission of visible light. <IMAGE>