Tutorial clinometers for a solar mask

  • First we build the clinometers:

    -stick the paper protractor on a cardboard  

    - fasten a string at the top in the centre of the cardboard as above with a weight at the end

    For use:

    •1. Point object with large side, leaving string free
    • 2. Wait until it stabilizes and then block it with your finger.
    •3. Read the rapporteur’s angle.

    -repeat this action every 10 degrees from east to west using a compass