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In lugnet.cad, Timothy Gould wrote:
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IIRC, *real* Lego parts use Imperial units, so converting to/measuring
using the metric system will involve lots of decimal places.
-Mike
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Given that Denmark went fully metric in 1912 and that a 1x1 brick is 8mm x 8mm
x 9.6mm (stud exclusive) it seems unlikely that imperial will work out better
for you.
Although it does so happen that 8mm is quite close to 5/16inch.
Tim
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That’s hardly some freak coincidence. The original 1949 Lego brick was an
unauthorized copy of the Kiddicraft Self-Locking Building Brick, invented by an
Englishman named Hilary Page. When the Christiansens got samples of them from
the British molding company that was producing them, they rounded the original
English dimensions to the closest metric equivalents which preserved the aspect
ratio.(1)
So yes, the Lego brick is officially 8 x 8 x 9.6 mm (ignoring tolerance), but
it’s 5/16 x 5/16 x 3/8 inches in spirit.
Allen
(1) I believe I originally read all this in The World of Lego Toys (1987), but
it is also detailed with references here:
http://news.lugnet.com/general/?n=54084
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In lugnet.cad, Allen Smith wrote:
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That’s hardly some freak coincidence. The original 1949 Lego brick was an
unauthorized copy of the Kiddicraft Self-Locking Building Brick, invented by
an Englishman named Hilary Page.
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I was aware of the Kiddiecraft connection, and that TLC bought all the remaining
rights from them at some point, but I thought the original Automatic Binding
Bricks were a legally licensed copy/variation of the Kiddiecraft bricks. If
they were, in fact, illegal copies, that kinda throws all the aggresive legal
action taken against various clone brands in a weird sort of light.
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