Wire Goniometer

This project arose from the need to build a hail shelter for the carWith simple string, 4 steel pins and a wire goniometer, measurements can be made to an accuracy of 1 degree.With the wire tightly stretched, simply insert the centre of the goniometer into the pin and insert the wire into the 2 slots and read off the value using the arm's single-degree scale to take measurements with 1 degree accuracy.