4 Printable rulers , double scale value (degree-centimeter)
4 bands (width=4cm; length=25cm) on each of the 4 sheets of paper A4format
total length of the 4 rulers : 4m
For a 1m high gnomon
The shadow is cast on the paper ruler
You measure the length of the shadow
You directly read the (...) >continue
Gallery of gnomons
Pencils gnomons
Gnomons held with the hand
Gnomons sticked in the ground
Gnomons laid down on a board, without fixing
Gnomons fixed on a board
Bottle gnomon
Other ways of fixing a gnomon
Ready made gnomons
Pencils gnomons
Xewkija
Alexandria (...) >continue