BSI BS 2457:1975

Current Revision
Protractors for drawing office use

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BSI BS 2457:1975

Protractors for drawing office use

PUBLISH DATE 1975
PAGES 8
BSI BS 2457:1975

This British Standard specifies requirements for protractors of the circular and semi-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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