The use of same units of measurement all over the world will certainly improve trade among nations, as the proudcts would be standardized, and inventories will be reduced. The information exchange among the scientists of the world will also be facillitated. The use of different units of measurement may prove diastrous sometimes. For example, a pilot or an air controllar is accustomed to reporting alititude in feet, not in metres. For example,if altiude of a plane is 3000 metres, is this about 10000 feet or 3000 feet or 1000 feet ? The difference might mean disaster. Thus air travel everywhere would becomes safer with the use of common units throughout the world.
