Features 1、LONG LASTING MATERIALS: The architectural ruler is made of long lasting PS plastic that is robust, easy to carry and can fit in a pocket for easy measurement 2、SIX RATIOS: A total of six ratios of 1:20, 1:25, 1:50, 1:75, 1:100, 1:125, the marks on the ruler are clear and easy to read, even from a distance can be clearly visible, convenient for a variety of applications 3、APPLICABLE SCENARIO: Scaling architectural ruler is suitable for professional fields such as education, architecture, engineering, etc. Also the tool of choice for students, painting enthusiasts, or as a building ruler 4、APPLICABLE CROWD: The architectural ruler is suitable for technicians, artists, architects, engineers, blueprint designers, interior designers, modelers, draftsmen, graphic designers, teachers and students 5、SMALL AND EASY TO CARRY: Pocket mini engineer scale ruler is small, easy for you to carry and allow measurement in small spaces, provide great convenience for your work Specification Item Type: Architectural Ruler Material: PS plastic Use: Triangular scale ruler suitable for technicians, artists, architects, engineers, blueprint designers, interior designers, model makers, draughtsmen, graphic designers, teachers, and students Size: Approx. 12.5cm / 4.9in Package List 2 x Architectural Ruler