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Old Apr 25, 2002, 09:28 PM
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Mike C's Avatar
Roxboro, NC U.S.A.
Joined Sep 2000
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Got a bet going. What do you call this?

Having a debate about what you call a triangular ruler. Has one corner at 90 degrees and the other at 45 degrees. I say it is called a triangle (simple huh?) My friend says it is called a speed square. I know speed squares are used in carpentry. I see this used in drafting a lot but have never heard a technical name before. Thanks for helping to settle this bet.
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Old Apr 25, 2002, 09:36 PM
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Sacramento, CA
Joined Sep 2001
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It's called a 45 degree triangle. The 'other' kind is a 30-60-90 degree triangle. Simple, huh??
Do you know what the other name for a (pair of) pliars is, you know the kind that has a slip joint? In the military, it's called a universal speed wrench (more trivia than you wanted to know).
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Old Apr 25, 2002, 09:56 PM
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Worcester, MA.
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My $0.02.
If it's plastic and generally used on a drafting table, it's called a triangle; metal and used by carpenters, a speed square. Simple huh?
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Old Apr 25, 2002, 10:05 PM
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William A's Avatar
Tacoma,WA USA
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My bro says it aint a speed square unless it's got an lip on it.

With lip=speed square

Without lip=triangle
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Old Apr 25, 2002, 10:09 PM
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Stregone's Avatar
Manassas, VA, USA
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I've never heard it called a speed square before, always simply 'a square'.
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Old Apr 25, 2002, 10:31 PM
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Philipp's Avatar
Grand Prairie, Texas, USA
Joined Mar 2000
829 Posts
A carpenters "SQUARE" is not a triangle or a square either, for that matter, it's an "L" shape.

I think that William A is correct with the lip-or- not value.

My 1.5 cents
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Old Apr 25, 2002, 11:01 PM
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Old Apr 25, 2002, 11:05 PM
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Mike C's Avatar
Roxboro, NC U.S.A.
Joined Sep 2000
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Thanks guys looks like I was closest to being right! I appreciate all of the quick responces. The lip part makes sense after you brought it up. I always said that the smartest folks on the net are right here
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Old Apr 26, 2002, 02:58 AM
Single-task at best...
tim hooper's Avatar
Telford, UK
Joined Feb 2000
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It's a set-square over here

tim
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Old Apr 26, 2002, 05:48 AM
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Worcester, MA.
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Good point William. I hadn't thought about the lip.
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Old Apr 26, 2002, 07:07 AM
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San Antonio, Texas USA
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Guys,,,,,,guys,,,,,,,,,,,,it's a square.
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Old Apr 26, 2002, 07:29 AM
aka: A.Roger Wilfong
gnofliwr's Avatar
Novi, Michigan, United States
Joined Jan 2001
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A square triangle?

Isn't that an oxymoron?

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Old Apr 26, 2002, 08:31 AM
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Worcester, MA.
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Quote:
Guys,,,,,,guys,,,,,,,,,,,,it's a square.
Only if it's like the one in the picture. If it's plastic, used for drafting it's a triangle.
Quote:
Isn't that an oxymoron?
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Old Apr 26, 2002, 08:55 AM
RIP Ric
Andy W's Avatar
Marietta, GA
Joined Jun 1999
43,312 Posts
I have that exact same triangular square.. it's a sqaure, no doubt..
Now this is silly..
..a
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Old Apr 26, 2002, 09:11 AM
All under control, Grommit!
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United Kingdom, Aberdeen
Joined Sep 2000
12,311 Posts
That's a set square.

Prime component of every schoolboy's geometry set along with the protractor, ruler and a set of compasses.

http://www.technologyindex.com/educa..._sq/set_sq.htm

Brian
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