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APPARATUS FOR INSTRUCTION IN PRACTICE POINTERS all weapons, especially cannons and machine guns
APPARATUS FOR INSTRUCTION IN PRACTICE POINTERS all weapons, especially cannons and machine guns
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机译:用于指导实践的仪器所有武器,特别是大炮和机关枪
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摘要
Apparatus for practical instruction pointer based on the following fundamental idea. That references or targets used to effect aim are fixed, but that the given appearance mobile, checking displacements in elevation and orientation of the optical axes of the visors or glasses aim, whereby it is achieved that for prompters , references or white, have movement.
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