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Metric tolerances
- Thread starter glend123
- Start date
- Replies 11
- Views 3,671
RC99
Diamond
- Joined
- Mar 26, 2005
I would guess it would be microns...
Don't do a Mars Climate Orbiter....
Don't do a Mars Climate Orbiter....
TonyOW31
Stainless
- Joined
- Feb 6, 2008
- Location
- Brisbane Australia
What size is the job? If it is a huge fabrication it could be millimeters.
David Utidjian
Titanium
- Joined
- Jun 30, 2006
- Location
- Wayne, NJ
If the dimension is '1255mm +/- 5' then I would say it is +/- 5 millimeters. If the dimension is '12.55mm +/-5' then I would definitely call the supplier of the drawing.
-DU-
-DU-
SteveCMT
Plastic
- Joined
- Feb 28, 2007
- Location
- Norfolk,NE.
I think your right, I get prints like that sometimes. I just move the decimal point 3 places to the
left and / by 25.4 , it works for me.
the parts range from about 2" to 4"
derekm
Aluminum
- Joined
- May 28, 2008
- Location
- Reading UK
still could be millimeters
50+2-0 is 50 to 52.
unless specified elsewhere in the drawing
bob ward
Aluminum
- Joined
- Jul 22, 2007
- Location
- Laidley, SE Queensland
Your conversion is correct, 25 microns = .001" (.00098425" to be precise)
NickIrons
Aluminum
- Joined
- May 4, 2008
- Location
- St-Imier, Switzerland
I've worked in Switzerland for over ten years and all drawings
I have seen, where the tolerance is a number without a decimal
point in front of it, have always been microns.
One thing the Swiss do love though is getting a dim bang in the
middle of a tolerance, they'll put for ex +-10, so if you're +6 you're
within tolerance, but they'll make a point in telling you it's on the
big side!!
hexbasher
Cast Iron
- Joined
- Feb 18, 2007
- Location
- Port Coquitlam, BC, Canada
why bother converting to inch,,,,metric isnt that scary....
CBlair
Diamond
- Joined
- Sep 23, 2002
- Location
- Lawrenceville GA USA
Metric=good...inch=stupid... 
I know not very relevant to the question at hand but I agree that there is little reason to convert, less chance of making an error.
Charles
I know not very relevant to the question at hand but I agree that there is little reason to convert, less chance of making an error.Charles
Good, because after talking to a few more people around here, that was the consensus.
