Optical sights with zero setting
— the presence of an optical sight (see "Type") of a zero adjustment function. This function is used during the initial zeroing, and later it greatly simplifies the work with vertical and horizontal corrections. Its essence is as follows
The process of zeroing in optics, roughly speaking, is the selection of such a position of the drums, in which at a distance of 100 m the sight ensures a clear hit at the aiming point (taking into account the spread of the weapon, of course). Such settings are taken as zero, it is from them that all further corrections are counted. However, the scales of the drums already show certain values by the time they are brought to this position — because of this, when you subsequently enter corrections, you can get confused in the number of clicks, make a mistake when returning the sight to its original settings, etc. The zero setting solves the problem: after zeroing, it is possible to rearrange the scales of the drums to the zero position without knocking down the settings of the adjusted sight. Thus, all subsequent corrections of the hands will be able to count from zero values on the scale, and to return to the original settings, it is enough to return the drums to the same zeros.
The specific method of such a setting may be different, usually, it is described in detail in the instruction manual. Here we note that this function is highly desirable for sights used in high-precision (sniper) shooting, where you have to work a lot and often with amendments.
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