Screw gauges. Measuring parts of reference gauges on wear for thread rings with "go" side. V-thread (angle between flanks=80 grads)
STANDARD published on 13.1.1961
Designation standards: ČSN 254349
Classification mark: 254349
Catalog number: 2211
Publication date standards: 13.1.1961
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: Czech technical standard
Category: Technical standards ČSN