One Set Angle Gauge Blocks 4002 Shanghai Osmya Trading Co., Ltd. Base Info Model NO.:4002Measurement Object:LengthCertification:ISO, GB, ANSCustomized:Non-CustomizedHardness:HRC62-65Origin:China Description Pre:NPT Thread Plug Gauge 1/4X18NPT (4644-1B18) Next:Non-Rotating Spindle Electronic Micrometer 0-1"/0-25mm (3631-25)