The STAEDTLER Mars® 561 Scale Ruler for Reduction is designed for easy scale identification with its colour-coded features. This ruler is perfect for accurate drawings and simplifies working with reduced scale drawings, such as floor plans.

• Reduction ruler - Ideal for working with drawings to scale
• Colour coding in red and green helps you see scales easily
• Sturdy construction - Made of white hard plastic for increased durability
• Comfortable grip - Features a raised rib in the middle for easy handling
• Scales available: 1:2.5, 1:5, 1:10, 1:20, 1:50, 1:100
• Length: 30 cm