Experience precision at its finest with the Staedtler Mars Reduction Scale Ruler Version 2. This remarkable tool features 6 different scales on each ruler, providing the versatility you need for a range of professional tasks. Each Blistercard contains 1 reduction scale ruler, giving you access to scales including 1:20, 1:25, 1:33.3, 1:50, 1:75, and 1:100. Crafted with attention to detail and a commitment to quality, this product is the epitome of reliability and ease of use. Part Number: 561 98-2BK. Perfect for architects, engineers, students and professionals alike, the Staedtler Mars Reduction Scale Ruler Version 2 is a must-have tool for anyone seeking precision and versatility.