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It may be once or twice a day, when a person needs/wants to find an angle.
Whether doing some work and not being in possession of a protractor, or just taking a passing thought that little bit further - penny protractors could certainly come in handy.
If each penny had a hole in the middle,
and a small mark at every 15 degree interval around its circumference - most people would have at least one protractor on them at any time.
Annotation:
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I like it. And add metric-to-inch-pound conversions to the dollar for ease of reference. |
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This is but one of a whole class of insufficiently-baked inventions consisting of {currency}{instruments of Math Instruction} including: |
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Nickel Numbers
Dime Dimensions
Quarter Questions
Half-dollar Hammers |
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Also note that for the proctactor, the 1-oz. Krugerrand has a nice round number (180) of serrations! |
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Bun for revival of Holey money! |
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Sorry about that, bit of confusion over these damned grammatical rules. It are all put back right now. |
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Hey, no problem, I just get fussed about it (and "it's") from time to time! |
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You might try to patent this. Coins and protractors are not novel, but a coin protractor? I doubt that you could get a utility patent for a metal disk to be used as a protractor. I wonder if a coin protractor could have a utility or design patent? |
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Perhaps there is a whole class of multifunction coin ideas. For example why throw out watch batteries after their use. They could be considered legal tender. |
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//They could be considered legal tender.// but they're ten a penny. |
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A brilliant idea! I have been in just such a situation myself. Money should be just as useful to me while in my pocket as it is when going into someone elses. |
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Need one of these. I run into several instances throughout the day where I need a protractor but all I have is a pocket full of change. |
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