Best Golf Rangefinder 2009 Anyone Know How To Use A Golf Rangefinder? NOT The Expensive GPRS Ones But The Pocket Sized Scopes?

Anyone know how to use a golf rangefinder? NOT the expensive GPRS ones but the pocket sized scopes? - best golf rangefinder 2009

mine is a pocket-sized gadget that comes without instructions from Slazenger, but their website will not go into details, we do not know how these or similar products on the market, and yes, I Arent they know very well, thank you man