Ability to read and understand simple blueprints / technical drawings.. Functional knowledge of manufacturing processes. Read, write, speak and understand English fluently. Ability to work with related tools and equipment including micrometers and calipers. Basic math skills including:. Four core math functions: addition, subtraction, multiplication, and division. Comprehending decimal places. Performing addition and subtraction on measurements to the fourth decimal place in inches. The act of measuring. A bit of geometry. Mechanical aptitude a plus.