164031 ⎘
Instruments as specified in the subgroups and characterised by the use of mechanical measuring means; Gauges with an open yoke and opposed faces, i.e. calipers, in which the internal distance between the faces is fixed, although it may be preadjustable for external screw-threads
Method and device for inspecting a threading of a tubular connection used in the oil industry
#2Measuring and testing device having segmented threads and thread segments adjustable with respect to each other
#3Inspection method of gauge for a self-locking threading of a tubular connection used in the oil industry
#4Thread gauge wire apparatus
#5Thread setting plug gage