scott wrote:
>>> Anyway, who's going to notice if the last step is 0.4mm less that the 
>>> others?
>>
>> ...which was why I was amused at the stairs having dimensions to the 
>> nearest mm. ;-)
>>
>> Seriously, if I take a tape measure to the finished building, do you 
>> really think all the measurements will be exactly whole numbers of 
>> millimeters? I somewhat doubt it. ;-)
> 
> No, but it's a typical value with some tolerance.  On our drawings we 
> always have stuff that is labelled like 16.68 +/- 0.20 mm, if they made 
> all the parts with an average of 16.66 mm then some of them wouldn't fit 
> together properly.

As I understand it, the stuff you make is somewhat smaller than a 
building. ;-)

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