Quasi-involute V-block

[tonyfoale]

"R x sq.rt(1x1 + 1x1) = 1.414141414 x R."

Hi Tony,

The chord length is indeed R root two. However, root two is irrational, thus cannot be represented by a repeating decimal. Its value is 1.41421... with never a repeating sequence of digits. This would make the contact points 0.70710678...D apart, still irrational, so 70.711% D rounded. You're close enough!

Of course you are quite right. When I write the sq.rt(2) I always do it correctly but when I type it I just go "one-four, one-four....." several times with two fingers without counting. Same with its inverse "Oh-seven, Oh-seven.....". That's a habit I need to get out of.