• An online web app measures the angle and the slope of any object.
  • Just use a web page to do it. No installation required.
  • You can use a camera on your mobile device to measure the angles.
  • send this page to mobile device: qr code
  • The red pin icon is draggable.
  • The value of the angles can be modified.
  • printable version: protractor.pdf | protractor-x4.pdf
  • drafting-tool: HTML5 Canvas