Rangefinders, I heard it was illegal to use hand held rangefinders for big game. Is this true?

Question:

I was thinking about buying a hand held rangefinder. Due to the cost of one, I wanted to confirm if they are legal for big game or not.

Answer:

Rangefinders are legal to hunt big game in Idaho with, as long as the rangefinder is not attached to a weapon (e.g. rifle, bow).