A complete generation has past since the significant iinplpmentation of the metric system of units in Australia (approximately 50 % of the current surveying profession entered the profession after metrication, or were born after M-Day). Nevertheless, many surveyors still need to interact with imperial units in their daily employment activities.This paper will outline the development of measurement units -particularly those relevant to the surveying profession. Metrication will be discussed, including some mention of the Institutions role and opinions in the era of change. Finally, an incomplete aspect of metrication will be discussed.