Art Alternatives Triangular Engineering Scale 12"

Article code 8243527011
This scale is designed to measure from reduced scale drawings, such as blueprints and floor plans, but also works as a handy all-purpose ruler.
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This scale is designed to measure from reduced scale drawings, such as blueprints and floor plans, but also works as a handy all-purpose ruler. Designed with engineers in mind, this scale is fully divided with gradations of 10, 20, 30, 40, 50 and 60 decimal parts to the inch.