In connection with the power to coin money and regulate the value thereof, Congress is expressly authorized to fix the standard of weights and measures (Const. Art. I, § 8, ¶ 5). But this power has never been exercised by Congress. Congress has indeed (1866) authorized the use of the metric system, but there is no requirement of its use. Until there is some further federal legislation on the subject, the power to establish standards of weight and measure is in the states acting each for itself. In the absence of any state statute, the common law or customary standards are recognized. In many states there is legislation fixing standards, providing penalties for the use of false weights and measures, and determining how many pounds of different commodities and substances shall constitute a bushel, the size of various fruit boxes and packages, and like matters. There is noticeable and very inconvenient lack of uniformity among the states on the entire subject, but thus far no steps have been taken by Congress to establish uniformity under the authority which has been given to it in the constitution.