Athlon APMR1 FFP IR MIL Manual - Página 3

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Reticle Subtensions

The APMR1 FFP IR MIL reticle is based on the milliradian,

usually shorterned to mrad or mil. A "mil" is defined as "one

thousandth", or 1/1000. A mil is 1/1000 of a radian ( a unit of

angular measurement). Since there are 6.2832 radians in a

circle, and each radian is chopped up into a thousand pieces,

there are 6.2832 x 1000 = 6,283.2 mils in a circle. Since there

are 360 degreee in a circle, we can get 360 degree/6,283.2

mils=0.573 degree/mil. If the target is 100 yards ( 3600 inches)

away, we can use 3600 Tan (Radians(.0573 degree)) to get 3.6

inches which means 1mil equals to 3.6 inches at 100 yards

The APLR1 FFP IR MIL reticle is located at the focal plane in

the front of the erector tube which is a key part of achieving

variable power inside the riflescope. Size of the first focal plane

reticle grows or shrinks at the same ratio with the changing size

of the image of your target when you try to zoom in or zoom

out. Since the size of the reticle remains constant compared to

your target regardless of the magnification, the first focal plane

reticle provides ranging capability and valid holdover points at

all power settings, and finer details of the reticle at high power

for a shooter to engage a target with a higher level of precision

and confidence.

Example

Reticle Subtensions in Mil

15x

0.04

0.5

0.2

0.4

0.5

0.8