Originally Posted by
woody
50cm = 19 and 5/8"
25cm =about 9 and 7/8"
15cm = about 5 and 7/8"
12cm = 4 and 3/4 inches
5cm = just a whisker under 2"
25mm = 1"
6mm = pretty close to 1/4"
I hope this helps a bit, are you able to get rulers from your stationery store that has centimetres and milimetres? Then you could just put it on your inch ruler and convert them that way.
If the measurements are given in metric------------USE METRIC. It's on the ruler you have. No need at all to convert. What's more, web site or not, it's way too easy for any of us to mess up conversions.