This is the name given to thin transparent tracing paper used by architects, engineers and others, mostly for sketching and overlaying.
I overlaid the lighting plan with a piece of bumwad and sketched on the lighting fixtures. Then I overlaid this on the ductwork drawing and saw where interferences occurred.
Prices shown in USD.
Type your email address below to get our free Urban Word of the Day every morning!
Emails are sent from firstname.lastname@example.org. We'll never spam you.