What font of engineering lettering do we use?
Sans Serif
What should be the size of lettering for each of the below?
title: 7 mm
subtitle: 5 mm
dimensions and notes: 3.5 mm
what fraction of the height of upercase letters should lower case letters be?
2/3
How big are fractions in comparison to regular numbers?
twice the height
How big should spaces between lines be?
3/5 total height of letters