Weird Measurement Anomoly
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i dunno, i use sketchup for working drawings all the time.. often way more complex than boxy type construction.. i've never once found a mathematical error by sketchup itself and if i did come across a discrepancy, i could trace it back to myself and/or my drawing method..
my post was more directed at otis though who is seemingly saying that in his .skp file, 1 + 1 = 3.
here's a thread from a while back where the user was saying something similar.. maybe something like this is happening to otis?
http://forums.sketchucation.com/viewtopic.php?f=15&t=23381 -
Well there is no doubt that during the process I could have done something that bumped the measurement, the same way I sometimes inadvertently erase something in an cleanup. I will be paying more attention.
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First thing might be to check to make sure the Units Precision is set to the most precise. If it isn't, the dimensions can be rounded off.
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Interesting, although my precision was set to 1/64, snapping was at 1/16, so that may have been my problem. That's why these threads are so valuable. Thanks
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I knew it had to be me, or is it. Here's the frame in question. Somehow it don't work out right, I think.
Notice the one opening at 9 9/16" when measured directly, then add up the measuremnts taken from the top down, or visa versa.I work to 1/64" BTW.
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otis..
didn't realize you were using the dimension tool as a means of measuring.. using that won't include the '~' in front of the dimensions.
if you measure your distances with the line tool or the tape measure , then you'll see that your distances are written like " ~9 9/16" .. (notice the ~ symbol in front of the numbers.. that means approximately)
the accuracy in the file is set to 1/16" so sketchup will only go down to 16ths.. if the real dimension is say 5/64 then sketchup will display ~1/16" which is the closest 16th to 5/64.
you can change the accuracy in model info -> units but even then, this file still has the '~' symbol showing up in front of some of the measurements.. (meaning some of your rails are placed at 128ths" or smaller)
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Dang, you're right. I always work to 1/64, so I didn't even check to see that somehow the units got changed. My bad
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here's a version drawn to the specs i think you're after.. (also cleaned up some weird things in there... hidden vs. softened lines.. if those were intentionally hidden instead of soft, sorry)
the left/right measurements were a little screwy as well but it's now exactly 31 x 48
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Thanks Jeff, that looks good. I know I've had a brain fart when I look at my spelling.
A-N-O-M-A-L-Y. There , I knew I could do it 
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Hi folks.
Make sure that you disable length snapping in Model infos --> Units. It may create unwanted snaps on an invisible grid that may not match your intended intervals.
Since SU can accept precise values and its inference engine is also precise, I don't use this feature.
Just ideas.
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