This vintage-style ruler necklace can be useful when you need to measure stitches and your bulky measuring tape or ruler isn't as handy as you'd like. Toss this mini ruler around your neck and never lose it again. Double-sided with inches on one side and centimeters on the other. 32" ball-chain with connector. Please be aware that these rulers are handmade and are stamped with the measurements beginning at the bottom or the top, so the first inch or cm may be up to a .25" or 1mm off.