This green illuminate rangefinder recticle rifle scope was specifically designed for low light shooting conditions with Illuminated rangefinder recticle, 11 brightness setting to choose from, it come with a pair of medium rings, and great for long range combat.

A rangefinder recticle measure distance using trigonometry (stadiametric rangefinders and parallax, or coincidence rangefinders). They usually use a set of known distances or target sizes to make the measurement.