Solid range fider - Bushnell Prime 1700 6x24 Laser Rangefinder

Look this isn't a $1000 insane range finder that will call deer to you or let you see individual hairs on an elk at 900 yards. Use it within normal parameters and it WILL do the job. The most important thing is that you will need to spend some time practicing before you are out in the field. With some practice this is a great tool to augment anything but all the longest hunts. If you don't have a range finder, this is a beautiful option to start with, no need to start by breaking the bank. It could be better, but there is nothing at all that it doesn't do.