Quote Originally Posted by Daan Kemp View Post
Probably the space between the horizontal lines change with the distance. Allows you to adjust aim.
Daan, from the link above in post #2. the seller of that particular scope has this to say about it's aiming dot and horizontal lines:

"The DOT in the center of the reticle is for ranging 9 inches (9”) game such as standing squirrels,groundhogs etc. The two parallel horizontal lines are for ranging 18” targets"