What is this plastic measuring thing?

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http://postimage.org/image/urnvnzkhz/ [Broken]

I was watching a tv show (the astute watcher will recognize it as How I Met Your Mother), when I saw one of the characters holding this thing (the curved plastic measuring-thing).

My dad used to have one of those on his work bench, and I used to play with it as a kid, but seeing it in the TV show I realized I had no idea whatsoever what it was. I tried googling it, but I ran into the inherent problem of figuring out what I would call it and I couldn't find anything, so I was hoping PF would help me.

The character in the show is an architect and my dad is an engineer, if that helps.

Thanks :)
 
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  • #2
Pythagorean
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compass?

http://en.wikipedia.org/wiki/Compass_(drafting [Broken])
 
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  • #3
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No the other thing, the one that looks like a big plastic nine (I'm so technical).
 
  • #4
Pythagorean
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Huh. Didn't even notice that. No idea. Looks like a specialty protractor, but I'm reaching here.
 
  • #5
Pythagorean
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French curve?
 
  • #8
Pythagorean
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  • #9
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Sorry. :tongue:

My monitor is too old. I couldn't even see the french curve in the OP's image.
 
  • #10
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French curves were very valuable tools in the days before CAD. I probably have more than a dozen of them in storage somewhere. Haven't uses them since about 1980.
 
  • #11
phinds
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It's definitely a French curve, as others have suggested. Like Pkruse I have several of them.
 
  • #12
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Haha thanks everyone, that solved a little part of my childhood :)
 

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