There are only a few newer production units that do this, all in one mounted in the scope.
A few that I'm aware of are the Burris eliminator, Revic PRM, and Swaro DS. The eliminator by far is the cheaper option, followed by Revic, and the Swaro. I do believe the swaro will be the best glass, but you pay for it.
I really wanted a Revic back in the day, but ended up going the ranging bino, and a ZCO for optics. This way I can use the bino with any rifle/glass combo I have for hunting, ranging, shooting as all I have to do is change the rifle combo in the app and it provides all my bullet hold over info I need for what ever caliber I am currently using.