BS 2459:1974

This standard BS 2459:1974 Specification for set squares (fixed and adjustable) for drawing office use is classified in these ICS categories:

• 01.100.40 Drawing equipment

This British Standard specifies requirements for set squares of the fixed angle (45° and 60°) and adjustable types, made from transparent plastics material, for drawing office use.

Set squares made from transparent plastics. Preferred sizes for 45°, 60° and adjustable types.