This standard specifies the technical requirements, inspection rules, marking and packaging of high-precision machine flat-nose pliers. This standard applies to high-precision machine vise used in surface grinders, tool grinders and other precision machine tools.
1999JB/T 9937.3-1999 Gad tongs intended to be used in high precision machines Technical conditions
JB/T 9937.3-1999 Gad tongs intended to be used in high precision machines Technical conditions was changed to JB/T 9937-2011 High precision machine vice .