This document specifies cylindrical squares, rectangular squares, rectangular knife-edge squares, triangular squares, knife-edge squares, wide-seat knife-edge squares, plane squares, plane squares with seats and wide-seat squares ( Collectively referred to as "squares") terms and definitions, types and basic parameters, requirements, inspection conditions, inspection methods, signs and packaging, etc. This document applies to squares with a measuring surface length of 50 mm to 1600 mm.
GB/T 6092-2021 Referenced Document
GB/T 17164-2008 Glossary of terms used in dimensional measuring instruments.Product terms