this post was submitted on 15 Aug 2026
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Ah yes, measuring out anything into thirds is awesome with metric. Nothing ever needs to be split into thirds.
Good point. Splitting things in to 3rds is the most common function of everything. Why, just the other day I was building a box. I started by measuring the largest face of the backplate and subtracting the thickness of the side plates so I could figure out the internal volume. Most people would have done a simple equation like x-y but I prefer to do 3((x/3) - (y/3)). It's a much cleaner method.
What happens in American customary units if you need to split it into 7ths?
Significant Figures. Things are rarely one third down past 3-4 sigfigs. Maybe 6+ if you're being really precise or EDMing a part.