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14 Cards in this Set
- Front
- Back
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Which instrument is used in measuring, or laying out angles?
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T-Square
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Name two types of drafting machines
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The arm- or elbow-type drafting machine
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Explain how you can check the accuracy of a T-square
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- First on a clean sheet of paper, draw a sharp, thin line along the drawing edge of the T-square. Second, turn the drawing sheet upside down and line up the drawing edge of the T-square with the other side of the line. If the drawing edge and the pencil line do not match the T-square is not accurate.
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Name the two most common types of drafting triangles
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The 45 degree triangle and the 30-60 degree triangle.
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What is another name for the irregular curve?
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A French curve
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Name three kinds of drafting media
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Tracing paper, Vellum, and Polyester film.
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What term is used to describe the dull, rough surface of polyester drafting film?
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Matte
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On what size letterhead is the ANSI standard A-size drawing sheet based?
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A commercial 8.5”*11” letterhead paper
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What instruments are commonly included in a drafting instrument set?
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Compasses with pen part, pencil part, lengthening bar, dividers, bow pen, bow pencil, bow dividers, and one or two ruling pens.
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Describe the range of graphite drafting pencils. Which pencil lead is softest? Which is hardest?
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6B, 5B, 4B,3B, 2B, B, HB, F, H, 2H, 3H, 4H,5H, 6H, 7H, 8H, and 9H. 6B is the softest & 9H is the hardest
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List three kinds of points for technical pens
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Hard-chrome stainless steel, Tungsten-carbide, and Jewel.
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What is an erasing shield, and why is it used?
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Erasing shields are made of metal or plastic and have openings of different sizes and are used to avoid erasing nearby lines accidentally
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If you create a drawing that shows a part at half its actual size, at what scale have you drawn the part?
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The Architect’s Scale
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What Type of scale would you use to create a map drawing?
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The Civil Engineers scale
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