Listed as "Standard ruler and metric ruler in one bottle". It is not true. There is no metric system here. Simply imperial. However, it is well made, so I did not deduct the stars. β’ 1/32 inch thick and just under half an inch wide, ideal for smaller packages and kits. β’ A side has 10 and hundredths of an inch intervals (the description says 10mm and 100mm intervals, which is incorrect. They are not in metric units). β’ There are 1/32" and 1/64" intervals on the other side. β’ Markings are engraved on the ruler, not just printed on it. β’ All edges have been sanded (not just die cut) and placed at 90 degrees. With it, you can clean the data very effectively. β’ No unmarked spaces at the beginning and end of the ruler. The marking begins and ends at the extreme edges. If you want a small steel ruler with an imperial system then that's great and should last you quite a while. If you want metrics, keep looking. I hope the description will be corrected.