BS 2457:1975
$86.31
Specification for protractors for drawing office use
| Published By | Publication Date | Number of Pages |
| BSI | 1975 | 8 |
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.
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