Tolerance? I'm highly suspecting the round figures to a thousandth aren't +\- 5 tenths. I'm always lost how folks quote without a comprehensive tolerance figure to the basic drawing.
In the "Napkin drawing club"(Which i happen to be a member), i assume that anyone who asks for a quote without adding tolerances to the drawings isn't looking for a high tolerance part. I always just ask for critical tolerences, if there is any before quoting. Most of the time i make parts for a customer like this, tight tolerence isn't an issue. For simple parts with hand drawings and such, i always make sure to ask, and make notes.