Lecture 5: Scale Flashcards

1
Q

Scale drawing

A

A drawing that shows a real object with accurate sizes reduced or enlarged by a certain amount.

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2
Q

Scale factor

A

How many times the real object is, compared to the drawing.

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3
Q

Metric scale notation

A

1/N
(1 = paper size, N = actual size)

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4
Q

Scale ruler

A

Tool to interpret size with labels that already reflect the scale

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5
Q

Engineer’s scale notation

A

1” = N
Based on US customary units and 6 systems (10, 20, 30, 40, 50, 60)

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6
Q

Inch symbol

A

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7
Q

Foot symbol

A

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8
Q

Engineer’s scale example

A

1”=1”
1”=10’
1”=100’
1”=100yd

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9
Q

Engineer’s scale ruler

A

6 division labels (10, 20, 30, 40, 50, 60) that represent the number of divisions in an inch of the scale ruler.

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10
Q

How to use an engineer’s scale ruler

A
  1. Identify the correct scale label and corresponding marks.
  2. Divide the length of the actual size object by the scale label.
  3. Draw the corresponding object’s length with the resulting number of division marks.
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11
Q

Architect’s Scale notation

A

N/M” = 1’ - 0”
(Left = size on paper, right = actual size) Based on US customary units and uses fractions.

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12
Q

How to use an architect’s scale ruler

A
  1. Choose an appropriate scale ruler
  2. Line up “0” mark with the object & read the “rounded-down” number
  3. Line up the rounded-down number with the other end of the object & measure the fractional feet
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