Stonemasonry.
Ability Score(s): Power + Precision
Usage: This is used to make lay out roads or buildings out of stone.
It is used as an occupational skill and used to attempt to make your wage with it. For each day you spend in a month working your profession, you make a DC 26 (+2 per additional day) check and for each success you have you increase your wage by 10%. Failures reduce your additional wages by 10% (to a minimum of 0% new wages or no increase to your wage). Typically a moderately successful character makes an additional 25% to 60% of their wage in additional money.