Review on AdirPro Automatic Speed Optical Transit by Erick Bowers

I'm a high school math teacher and I use Transit to do some real world measurements combined with some trigonometry in my estimating class. For what we do, it's great. It's a simple tool and my students learned how to use it very quickly. It is easy to align and has good accuracy for measuring horizontal angle. My students have a lot of fun with their project using this tool.