Doesn't Eat Food Nor Drink

Riddle: I am a non-living thing that has a mouth I don't eat food or drink but numbers. Most people use me in work and say I have the longest tongue on earth. What am I?

Answer: I am a measuring tape!!

Source: https://www.riddles.com/6947

I am a non-living thing that has a mouth I don't eat food or drink but numbers. Most people use me in work and say I have the longest tongue on earth. What am I? — Doesn't Eat Food nor drink by Kesh Carey Riddle