Metrication Opposition

As metrication has spread round the world in the last two centuries, there has been opposition. According to the U.S. Metric Association and a recent CIA survey every country except Burma, Liberia and the United States of America have officially adopted the metric system.Actual usage, however, is more complex. According to Warwick Cairns, Guyana has officially adopted the metric system every three to five years, on average, since 1981, each time with little success.Also the United Kingdom and Canada, continues to use some Imperial units in both official and everyday usage, often in combination with the equivalent metric units. Certain measurements in the United Kingdom remain exclusively imperial; for example, road signs are required by law to give distances in miles and yards, although widths and heights can be given in metric as well.