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Thread: Scale conversion question

  1. #1

    Scale conversion question

    a puzzler: I've blown up a drawing which had a scale of one inch= 1,000 ft.
    It was enlarged by 175%. What is the new scale?


    Dave

  2. #2
    Cyburbian donk's avatar
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    Sounds like one of my GMAT practice questions.

    Should work out that 1 inch = 571 ft. (1000/175)

    I know my first reflex was to say 1=1750 but if you "blow" something up the scale has to shrink (ie the unit become smaller). No wonder I'm finding the math sections difficult, and yet another reason I leave scale to my techs.
    Too lazy to beat myself up for being to lazy to beat myself up for being too lazy to... well you get the point....

  3. #3
    If I just had a 1:571 scale, I'd be in hog heaven.

    Most US scales are 1:10, 20 ... 60 (or 100 ... 600) If you want to save time and consternation, reduce or enlarge with these scales in mind.

    I once got a record plat scaled at 1:75 Rejected it out of hand
    Labor is prior to, and independent of, capital. Capital is only the fruit of labor, and could never have existed if labor had not first existed. Labor is the superior of capital, and deserves much the higher consideration.
    Abraham Lincoln

  4. #4
    Cyburbian
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    Hum.. shouldn't numerical scales be represented with the same units in both sides? Otherwise you'd have dumb and misleading scales of 1:1 that are actually 1 inch=1 mile.
    Also a small tip that can be used in both metric and crappy imperial systems: draw a graphical scale when enlarging or shrinking... so that way you can easily get the numerical one with just a ruler.

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