The standard applies for the graduated steel rules with the square cross-sections and the complete length up to 5000 mm which are used for mechanical manufacturing preferably.
DIN 866:2006 Referenced Document
DIN 876-1 Surface plates; natural hard rock surface plates; requirements and testing / Note: To be replaced by DIN 876-1 (2009-11).
DIN 876-2 Surface plates; cast iron surface plates, requirements and testing / Note: To be replaced by DIN 876-2 (2009-11).
DIN EN ISO 1 Geometrical product specifications (GPS) - Standard reference temperature for the specification of geometrical and dimensional properties (ISO 1:2022); German version EN ISO 1:2022*, 2022-10-01 Update
DIN EN ISO 1101 Geometrical product specifications (GPS) - Geometrical tolerancing - Tolerances of form, orientation, location and run-out