Segment 2: Engineering Technology and Safety
Manual Drafting Equipment
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Drawing Ink
Used for technical drawings. Must be completely opaque to produce good, uniform line tone, but also be erasable on all drafting media.
Erasing Shield
Used for avoiding erasing nearby lines accidentally.
Customary-Inch Scales
Decimal-Inch Scale
Metric Scale
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Technical Pens
Contain points of various sizes to draw a specific line width. The three different types are:
A.) Hard-Chrome Stainless Steel: For use on paper pr vellum. B.) Tungsten-Carbide: For long wear on film, vellum, and paper. C.) Jewel: For long, continuous use on film. Lettering Guides
Lettering sets have three basic tools: the scriber, the lettering templates, and technical pens.
Erasers
Soft erasers are used to clean soiled spots or light pencil marks from drawings. Vinyl erasers work well for erasing on film. Electric erasing machines also work.
ScalesUsed to lay off distances and to make measurements.To the left are scale shapes.
Architect's Scale
Mechanical Engineer's Scale
Civil Engineer's Scale
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CAD Equipment
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