GS1 is an international not-for-profit association with Member Organisations in over 110 countries. It was formed over time from establishments of and connections and mergers between numerous standards bodies, including the Uniform Code Council—promulgators of the original Universal Product Code (U.P.C.) barcode—European Article Numbering (EAN) Association, EAN International, the International Organization for Standardization, the Auto-ID Centre at the Massachusetts Institute of Technology, and the World Customs Organisation.
GS1 is dedicated to the design and implementation of global standards and solutions to improve the efficiency and visibility of supply and demand chains globally and across sectors. The GS1 system of standards is the most widely used supply chain standards system in the world, and now includes an international standard for Electronic Data Interchange (EDI), Healthcare Collaboration Project, Global Standards Management Process (GSMP), GS1 DataMatrix (the first two-dimensional symbol adopted by GS1), the first standard for Radio Frequency Identification (Gen2), and the Global Data Synchronisation Network (GDSN), a global, internet-based initiative that enables trading partners to efficiently exchange product master data.
There are no words associated with the acronym 'GS1', which was formally adopted in 2005.
There's not really anything here that you would not already get from the GS1 Package Measurement Rules Standard except "calibrate your instruments," which should be obvious already, and a bit of nomenclature for stair parts, which is likely irrelevant to most readers.