Screw gauges. Measuring parts of reference gauges for ring thread "not go" gauges. Whitworth thread, diameter W1/8" - W3"
STANDARD published on 1.11.1964
Designation standards: STN 254157
Classification mark: 254157
Catalog number: 56139
Publication date standards: 1.11.1964
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: Slovak technical standard
Category: Technical standards STN