Achieve flawless geometric accuracy and architectural detailing with a tool designed to eliminate guesswork and deliver professional-grade results on every draft.
Engineered for Absolute Clarity
The STAEDTLER Mars Professional Protractor is meticulously crafted for those who demand precision. Whether you are mapping out complex architectural sketches or teaching fundamental geometry, this 6-inch tool provides the technical reliability you need to succeed.
View your work surface without obstruction, ensuring perfect alignment with existing lines and vertices.
Read angles from 0 to 180 degrees from both left and right, offering maximum versatility for complex layouts.
The tapered edges allow the measuring surface to sit closer to your paper, preventing perspective errors during marking.
Durable, extra-thick plastic construction withstands the heavy daily use of busy classrooms and engineering firms.
Why Precision Matters
Your designs are only as good as your measurements. This professional 180-degree half-circle tool features high-contrast black graduations that remain legible even under intense studio lighting. Specifically engineered to prevent ink smearing, it allows you to move across your workspace with confidence and speed.
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Items can be returned or exchanged within 30 days of delivery.