The variational momentum of directing line is the primary factor of effecting the accuracy of weapon firing and one of the essential testing project after it's firing,so it's necessary to design a system to measure it.
The variational momentum of directing line is the offset of directing line on the reticule and one of the standard to evaluate properties of stability. A high accuracy system to measure the variational momentum of directing is designed in the case of assuring the same position of sight de...