Niigata Seiki

THERAD LIMIT RING GAUGE( OLD JIS FOR MACHINE WORK CLASS 2 / GRWRⅡ)

GO/NOGO gauge for checking accuracy of thread

USE
● For Internal / external screw thread inspection

FEATURES
● Enables to inspect whether threaded parts are within upper/lower limits of the screw’s prescribed dimensional precision.
● Provided with inspection report
● Thread limit Gauge is used to perform GO / NOGO inspection based on the minimum and maximum dimensions prescribed for each screw grade.
For acceptance of a threaded part, GO gauge should thread without any difficulties and NOGO should not thread more than two complete revolutions.

MATERIAL
● Alloy tool steel