Verticality Horizontality
Aim:
Experimental settings of the materials to make a measure
Observation
Settings using spirit level, plumb line, set square
Production
Slideshow or video showing the experimental settings of the gnomon
Set horizontality then verticality with a spirit level
Set horizontality then verticality with a spirit level
Set verticality with a set square
Set verticality with a set square
Set horizontality of a board with screws, use a spirit level as gnomon
Set horizontality of a board with screws, use a spirit level as gnomon
Plumb line as a vertical gnomon
Plumb line as a vertical gnomon
