Measurement Standard is a term used to describe the standard units of measurement used in various fields. The most common UNIT of measurement is the meter, which is a four-letter word. A MODULE is a six-letter word that is used to measure the size or capacity of something. Finally, a GAUGE is a five-letter word that is used to measure the thickness or diameter of an object. All three of these terms are used to describe the standard units of measurement used in various fields.