12" Architectural Scale Ruler, Aluminum Scale, Triangular Ruler, Scale Ruler for Blueprint Imperial Measurements for Architects Engineering Artists, Draftsman Drawing, Laser-Etched Markings.(Blue)

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• 【PREMIUM QUALITY】:Our triangle scale ruler made of solid aluminum,very solid not rust,perfect for office drawing work or school classroom study.
• 【TRIPLE SIDED DESIGN】:Triangular Architect's ruler features 3 sides with 6 different scales,very convenient and useful for professional.
• 【STANDARD IMPERIAI MEASUREMENTS】:1-1/2", 1, 3/4", 3/8", 3/16", 3/32", 1/2", 1/4", 1/8", 3, 16.
• 【LASER ETCHED TECHNOLOGY】:Architect ruler for laser etched,laser etched technology effectively prevents scale numbers and markings from wearing off or fading away, they will not wipe or scratch off ever.
• 【WIDELY APPLICATION】:metal rulers are good for technical, artists, architects, engineers, teachers, and students.