There are some immediate benefits for contractors in the United States who begin right now to use the metric system for measurements of length without troubling to adopt other metric measurements such as weights, strengths, and temperatures. Indeed the other units would probably be bothersome at the present time. The practical consequences of using the metre now are the main subject of this article. The United States is almost alone in the way it measures and controls its production and construction. Virtually all the rest of the world has converted its weights and measures to the metric system. The United States faces enormous disadvantages in international commerce, business, and finance because of its inefficient system. Our system imposes disadvantages in domestic construction as well. Eventually we must convert. The longer we wait the more problems there will be and the greater will be the cost. The contractor would perhaps continue to use English units in making the estimates. For convenience in making job measurements, however, all dimensions shown on the drawings would be converted to metric in the contractor's office, entered in color next to their English equivalents and further distinguished by encircling the numbers. Conversion to a partial system is not particularly difficult. As a matter of fact, if a law were passed tomorrow calling for complete conversion to the metric system, the problems would be much less severe for the construction industry than for others. Complete conversion will be a benefit to all of us, once these conversion problems have been solved and we have begun to think and calculate in metric.