GB/T 22521-2008
ActiveAngle block gauge
角度量块
Application Summary AI generated
GB/T 22521-2008 specifies the design, dimensional tolerances, and accuracy grades for angle block gauges used as reference standards in angle measurement. It is applied in metrology laboratories and quality control departments for calibrating angle-measuring instruments, such as sine bars, protractors, and optical angle gauges, in mechanical manufacturing and precision engineering. The standard ensures traceability of angular measurements to national metrological benchmarks.
Related Standards
GB/T 14495-2009
Geometrical Product Specifications (GPS)- Surface texture: Profile method Roughness comparison specimens for wooden pieces
GB/T 3934-2003
Specification of gauges for general purpose screw threads
GB/T 6091-2004
Knife straight edge
GB/T 9058-2004
Micrometer with prismatically arranged measuring faces
GB/T 9056-2004
Metal ruler
GB/T 8122-2004
Dial bore gauges
GB/T 8124-2004
Tolerances and general features of gauges for metric trapezoidal screw threads
GB/T 6314-2004
Internal micrometers with three-point contact
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.