We have only made one Metric board, blue in colour. Most conversions will give you fractions of a cm for example one inch = 2.54 cm so it is very difficult to do an accurate converted score. Two inches is 5.08 cm. It really is best to have two boards. The newest Scor-Pal has grooves every 1/4" etc. and is light blue. It has a magnet under the logo.
Once Upon a Stamp is the best place to buy them. We also ship overseas, First Class Mail is about $25.00.