This standard specifies the panel, housing and opening dimensions of industrial process measurement and control instruments mounted on a dashboard or console. This standard applies to industrial automation instruments installed on instrument panels or consoles. This standard applies to instrument sizes that have special requirements under special working conditions (such as explosion-proof instruments, etc.).
JB/T 1402-1991 history
1991JB/T 1402-1991 Dimensions of measurement and control instruments in industrial process of panel mounting and cutout dimensions