Engineering Drawing
These are special installations of stone or concrete marking the locations of points accurately determined by precise surveying:

Pillars
Monuments
Topographic marks
Hatches

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Engineering Drawing
Traditional drafters need to be able to create several different line widths because ________.

They seem to transmit better in a fax machine
The line width has to do with how dark it appear in the finished drawing
Different line widths convey different information
It makes no difference

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