Originally Posted by johndeerebilly

there are 2.54 cm to an inch. convert 2.54 cm to mm is 25.4 mm. multiply 25.4 by .75 (.75 is 3/4 of one) the result is 19.05mm so in my world.... 19mm while it does not perxactley equal 3/4" it will and does work nicely. That is my story and I'm sticking to it! class dismissed!
and....... 3/4" converts to 19.05 mm. now really, 5 1/100 of a mm. LARGER than 3/4" we aint't talkin rocket surgery here