The control and drawing sets. The precision of the scale surfaces and edges of the steel rulers and angles
NORM herausgegeben am 30.3.1957
Designation standards: ČSN 255102
Classification mark: 255102
Catalog number: 2228
Publication date standards: 30.3.1957
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: Czech technical standard
Kategorie: Technische Normen ČSN