Milliradian question

[Varoum]

http://www.deon.co.jp/march/Reticles.htm

At the bottom of the link, you have a value in Mil. What would be the value of A at 25X?. They give at 5X, 10X and 20X...

[Drifter]

I'm guessing 4Mil.

For "A" on your link, it shows that 5x is 20Mil (which I'll use as a baseline to decipher their math), and...

10x is 10Mil (which is double the power, and half the mil), and...

20x is 5Mil (which is 4 times the power, and 1/4 the mil).

Thus, 25x should be 4Mil (which is 5 times the power, and 1/5 the mil).

[Varoum]

So at 25X the first line after the cross in any direction is 0.2Mil. Right?

[Drifter]

Both "B" and "D" should be 0.2Mil at 25x.