How can I make fullscreen cross hairs appear centered on the pointer?

How can I make fullscreen crosshairs, centered on the mouse, appear on my screen? I read a lot of science papers with graphs that I want to quickly be able to see what feature is horizontal/vertical with another feature. I'm looking for something like the below screenshot of LibreCAD, but for the entire screen. I searched the repositories with $ apt-cache search cross | grep hair amongst other attempts, and wasn't able to find anything.