Cased Instruments
Introduction
Cased instruments allow the draftsman to make precision drawings and
maintain uniformity within the drawing. Quality tools improve the work.
Use these tools for their intended purpose.
Cases
Drafting instruments are delicate, precision drawing tools that require
protection. Most instruments, even when purchased separately, come in their
own case. This case protects the drawing tool. Many cases are impregnated
with a rust or corrosive inhibitor to protect the drawing tools from the
environment and atmosphere. Keep drafting instruments clean and put away
when not in use.
Figure 2-18 shows a case full of clean, properly stored drafting instruments.
Figure 2-18. —Drawing instruments in a protective case.
Continued on next page
2-19
