There is no literal idiom -- an idiom is a phrase that seems to mean one thing but actually means something else. The word "literal" means to take the words exactly as they seem to be.
The LITERAL meaning would be that you grew another eye that was used for measuring. The FIGURATIVE meaning is that you learned how to measure things well.
Get off your high horse
Tongue in cheek
Spill the beans
Cat got your tongue
Wet blanket
Knock your socks off
For the birds
All thumbs
Jump the gun
Driving me up the wall
Bad Blood
A good...