1. I know you don’t believe me, but what I’m telling you is on the level. 1. Their parents tried not to tell them where they were going, but the children were too clever for them. They guessed it on the nose.
2. The car dealer offered Robert a chance to buy a fancy car at a big discount. Robert was suspicious because he didn’t know if the deal was really on the level. 2. The children’s father told them each to think of a number between one and ten. The child who chose the closest number to the one he was thinking of would get the larger piece of candy. His youngest daughter picked the number on the nose.

Compare to: on the up and up. exactlyCompare to: hit the nail on the head.