What is the ruler on the rifle for?

First, the role of the ruler is to set different aiming distances, and the height of the photo door can be adjusted by the ruler.

Second, the principle of the scale: Because the trajectory of the bullet is similar to a parabola, and the aiming line between the sight and the camera door is a straight line, in order to make the aiming line intersect with the trajectory curve for a certain distance and tilt slightly, the inclination of the aiming line can be adjusted by adjusting the camera door with the scale to adapt to different ranges and ensure the accuracy of shooting.

Thirdly, the gauge sets different distances within the effective range of firearms, and the height of the gauge gap is adjusted by adjusting the gauge to an appropriate number. If the target is at a distance of 200 meters, the scale size should be adjusted to 200 marks.

First of all, a rifle is a long barrel gun fired by a single soldier. It is mainly used to fire bullets and kill exposed living targets. The effective range is generally 400-1000 m.

Second, you can also use bayonets and gun butts; Some can also launch grenade, which has the ability of point-to-point killing and anti-armor, and is the basic weapon of modern infantry.

3. Rifles refer to long guns with rifling (also called double-track rifles) and long barrel guns fired by individual soldiers.

Fourth, it is mainly used to fire bullets and kill exposed living targets. The effective range is generally 400 meters; You can also use bayonets and gun butts; Some can also launch rifle grenades, with the ability of point-to-point killing and anti-armor.

Five, rifles are divided into non-automatic, semi-automatic and fully automatic according to the degree of automation, and modern rifles are mostly automatic rifles. According to the purpose, it is divided into ordinary rifles, riding rifles (carbines), assault rifles and sniper rifles.

References:

Rifle-Baidu Encyclopedia