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| Tips, Techniques, and Questions -- Technical questions or tips |
2011-06-15, 9:38am
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In the line of fire
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Join Date: Dec 16, 2005
Location: Givat Ze'ev, Israel
Posts: 259
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Converting Between Inches and Millimeters
There was some discussion in another thread of size comparisons between fractional inches and millimeters. I know I've gone crazy myself when ordering tools or reading tutorials using one or the other measurements. I want to share with you this useful chart which gives the conversions both in fractions and in decimals. Hope it helps you like it's helped me.
http://www.hamuniverse.com/antfrac.html
When I was in grammar school (some 40 odd years ago!), the teachers frightened us by saying we better learn the decimal system because within 10 years America would be adopting it. I guess they gave up that goal!
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Robyn
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2011-06-15, 10:58am
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Gentleman of Leisure
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Join Date: Jun 10, 2005
Location: A Little Bit West of Yosemite Valley
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Here is excellent tool to convert most anything to most anything....
http://joshmadison.com/convert-for-windows/
Dale
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2011-06-15, 11:48am
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Beadmaking.nl
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Join Date: Nov 14, 2005
Location: Heerhugowaard, Netherlands
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You can also type in Google:
3/8 inch in mm
http://www.google.nl/search?source=i...qi=g1&aql=&oq=
And Google wil tell you the answer.
Works with everything:
Oz in cl
Dollar in euro
Etc. No tools needed, just internet.
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Greetings from the Netherlands,
Margriet.
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2011-06-15, 11:58am
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Senior Member
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Join Date: Dec 31, 2005
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How about one that has Inches, MMs, wire gauges and drill Numbers?
http://tinyurl.com/3lg6txj
Steve
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2011-06-15, 12:04pm
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Join Date: Feb 05, 2011
Location: Upstate NY
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Every single engineer where I work has the program Dale linked to on their machine. It's excellent and you can even add your own conversions if needed. A general rule is that all units given to you will be in the least usable and most confusing form- furlongs per fortnight for example.
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Conrad
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2011-06-15, 12:07pm
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I fart diamonds
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2011-06-15, 12:56pm
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In the line of fire
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Join Date: Dec 16, 2005
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I didn't know about the Josh Madison one. When I download it, I'll see if it gives fractions, not just decimals. That's the problem with most conversion tables. They don't show mm in fractions of inches. And who wants to do the math for that???!!!
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Robyn
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2011-06-15, 1:10pm
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Gentleman of Leisure
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Quote:
Originally Posted by Robyn
I didn't know about the Josh Madison one. When I download it, I'll see if it gives fractions, not just decimals. That's the problem with most conversion tables. They don't show mm in fractions of inches. And who wants to do the math for that???!!!
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Most mm dimensions do not directly convert to fraction the do however convert to decimal....
Most engineering calculations and drawings are in decimal (well modern ones) ...
Dale
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2011-06-15, 1:22pm
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Entropy increasing....
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2011-06-15, 1:30pm
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Senior Member
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Drifting away from the original topic, I've always liked Sharp calculators (when I'm not using my RPN HP). The Sharps are really inexpensive on Amazon and some of them (like the EL-506 series) can display fractions and flip between fractions and decimals. Very handy at times.
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Conrad
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Tanks
mostly boro technical projects
"I'm sure I'm on a planet but I don't know if it's still earth."
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2011-06-15, 2:25pm
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In the line of fire
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Join Date: Dec 16, 2005
Location: Givat Ze'ev, Israel
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Dale, it would be wonderful if the Americans and Brits would talk in decimals. Much easier to comprehend than fractions! The common sizes used by Europeans (3mm mandrel, for example) are not exact equivalents to similar, common sizes used in the inch world (1/8" mandrel for the same example). 1/8" actually equals 3.175mm Usually this is not a problem, but it does have the potential of screwing up a precise calculation.
We make our tools based on the metric system and sell a lot to Americans, which necessitates giving comparable inch measurements as well. The headache is mine, figuring out the closest equivalents.
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Robyn
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