Angle Protractor - Free Online | ToolXHub

The measuring needle tool displays a semicircular or circular measuring needle on the screen, which can be used to measure the size of any angle on the picture or interface. Align the center point of the measuring needle with the peak of the angle, rotate the measuring needle to align one edge, and read the angle value corresponding to the other edge.

Supports two units of degree and arc, which can be switched in real time. The measuring needle can scale the size, rotate the angle, and adjust the transparency, making it easy to use in different scenes. Some versions support marking angles directly on the measuring needle or saving measurements.

This tool is suitable for students to learn geometry, measure angles in pictures, or design scenes that require rapid angle measurement. Draw the moment measuring device using JPEG or Canvas and support mouse drag rotation and alignment. This is a purely front-end tool that does not require uploading any files.

The measuring needle tool displays a virtual measuring needle on the screen, can measure the size of any angle on the picture or screen, and supports switching between angle and radian units for geometric learning or design.