Who determines and controls these strict set of standards?
At a Federal level, the National Standards Commission (NSC) is the Federal government body that sets and regulates the standards. It also tests all new instruments of measurement to be used in trading, whether it is an instrument to determine weight (scales), volume (flowmeters) or measurement (eg. how long is a metre?). The NSC set the standards and accuracy requirements for each type of instrument when used for a specific purpose. At a State level, the Trading Standards Branch (was known as the Department of Weights and Measurements) is the State Government body charged with the responsibility to enforce the decisions and rulings made by the NSC.