This standard specifies the terminology, product classification, technical requirements, test methods, inspection rules, signs and packaging of vernier universal angle ruler. This standard applies to vernier universal angle gauges with vernier readings of 2' and 5' and measuring ranges of 0° to 320° and 0° to 360°.
GB/T 6315-1996 history
2008GB/T 6315-2008 Vernier,dial and digital display universal bevel protractors