There has been some dicussion about 10 not being divisible by 3. The practical answer is that if you wish easy dividability start with a number that is divisible by 3. A common size of metric plywood is 1200 by 2400 mm.That is just as divisible by 3 as 48" by 96".. However, it is easier to divide a metric dimension by any old-ball divisor than to divide an inch dimension by the same divisor if you work in binary fractions of an inch.
