| 摘要 |
FIELD: weapons and ammunition. ^ SUBSTANCE: artillery piece barrel should be rigidly secured on to the swinging platform. Proposed device consists of three semi-spheres inserted one into the other. Inner and outer semi-spheres are rigidly secured on said platform, while intermediate semi-sphere moves free between them and is furnished with hole arranged at its lower part, like aforesaid inner semi-sphere. Said intermediate semi-sphere has a weight. Given strictly horizontal position of platform with artillery piece, holes of inner and outer semi-spheres, light source fitted in inner semi-sphere and photo diode arranged on outer semi-sphere are located on single axis directed towards the Earth center. Transparent lubricant is arranged between semi-spheres. ^ EFFECT: possibility to watch vertical position of barrel relative to surface. ^ 2 cl, 2 dwg |
