“Scientists investigate that which already is; Engineers create that which has never been.”
—Albert Einstein [German born American Physicist who developed the special and general theories of relativity. Nobel Prize for Physics in 1921. 1879-1955]
Here at Howard's, we know what you need and we stock all sorts of drafting supplies that used to be common, but are now hard to find:
Compasses and dividers
Rulers, templates, triangles, etc.
If the supplies you're looking for were made at one point, chances are we either carry it in stock, or will be able to order one for you.