The International GPS Standard DIN EN ISO 1101 gives basic information on geometrical tolerancing of workpieces. With this set of two laminated fold-out leaflets, GPS experts can always have the essential information from the standard at their fingertips. The set consists of two laminated leaflets of format 21 x 40 cm, that fold up to envelope size. Part 1 deals with general principles (tolerances of form, orientation, location and run-out). The revised 2014 edition has been extended to cover further aspects such as 2D and 3D representation, including dimensional tolerancing. Information on symbols is given in the second leaflet. English translation.