Answer:
I have two body parts but am used to measure length. What am I?
Deep, deep, do they go. Spreading out as they go. Never needing any air. They are sometimes as fine as hair.
I have no voice but I can teach you all there is to know. I have spines and hinges but I am not a door. Once I've told you all, I cannot tell you more. What am I?
I beam I shine I sparkle white. I’ll brighten the day with a single light. I’ll charm and enchant all I’ll bring the best in you all.
When I get closer my tail grows longer but when I go away my tail leads the way.
It rows quickly with four oars but never comes out from under his own roof. What is it?