The circular measuring tape is made of PS plastic case and metal material tape butt. Press the retractable button and the measuring belt will retract automatically. Pull down the measuring belt and the measuring will be locked. There is a clear inch scale on one side and a centimeter scale on the other, all for your convenience. The balance is absolutely accurate. A good metal tape measure can provide you with accurate measurements for tailors, craftspeople, quilters, or anyone who just needs a flexible tape measure. suitable for a seamstress, a crafter, a quilter, or whoever just needs a flexible measuring tape.