| The gauging system I use has its' origins around the turn of the
century when they decided to split the millimeter into 20 equal parts.
So each gauge number is equal to a 20th of a millimeter. So for example
.90mm equals 18 gauge. The easy math is to divide ( or multiply) by 5
and move the decimal point two places to the left. The system is useful
because the gauge numbers also translate easily into English measurments
by multiplying by 2 and moving the decimal three places to the left. So
18 gauge would equal .036 inches. |