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sklademVydáno: 1975-01-31
BS 2457:1975
Specification for protractors for drawing office use
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| Označení normy: | BS 2457:1975 |
| Počet stran: | 8 |
| Vydáno: | 1975-01-31 |
| ISBN: | 0 580 08089 7 |
| Status: | Standard |
Popis
BS 2457:1975
This standard BS 2457:1975 Specification for protractors for drawing office use is classified in these ICS categories:
- 01.100.40 Drawing equipment
This British Standard specifies requirements for protractors of the circular and sem-circular types for drawing office use, made from transparent plastics material.
Includes preferred sizes, for circular and semi-circular protractors made from transparent plastics. Specifies qualities of suitable materials.