Vertical sundial of North orientation

A grid oriented to the North with 5 engraved hour lines and one curve indicated (from up to down on its right part), with the help of the shadow trace from the horizontal (perpendicular to the grid) gnomon tip, 2 unequal (depending on the season) day hours after the sunrise (1st and 2nd) and (from down to up on its left part) 2 unequal (depending on the season) day hours before the sunset (11th and 12th). The right horizontal hour line at the height of the gnomon indicated the sunrise and the left one the sunset. The curve indicated the course of the Sun’s shadow at the summer solstice.



Level sundials