About ANPROTRACTOR

Precision Measurement for Everyone, Everywhere

ANPROTRACTOR (ANPROTRACTOR.com) was created with a clear engineering objective: to provide a high-precision, sub-pixel digital angle measurement tool that works instantly on any device without software downloads or subscriptions.

Our Mission

Our mission is to eliminate physical protractor inaccuracies, parallax distortions, and heavy desktop CAD software dependencies by empowering professionals, educators, and DIY builders with instant vector measurement tools directly in their web browsers.

Core Technical Values

Sub-Pixel Accuracy: Math-driven HTML5 vector calculations accurate down to 0.01°.
Absolute Privacy: 100% local client-side processing ensuring your blueprints and images never touch external servers.
Universal Accessibility: Full touch screen support across smartphones, tablets, laptops, and 4K desktop displays.
Zero Friction: Free access forever with no mandatory accounts, paywalls, or software installation.

Who Uses ANPROTRACTOR?

ANPROTRACTOR is used daily by civil engineers, mechanical drafters, architects, carpentry craftsmen, geometry teachers, medical researchers analyzing joint flexibility, and students worldwide.