If you dont have a rangefinder, this works great!

I have used a rangefinder (borrowed) in the past, but picked this up to see how it would work and it works like a champ! If you already have a rangefinder, would be great as a back-up. The drop-compensated distances are a real plus too. Well worth the money.

HDBowHunter about Legends of the Fall RangeFinder Shooting Utility for Hunting