Sundial of the month March

Split armillary sphere

In 1969, this modern armillary sphere sundial was placed at the denominational technical school in Apeldoorn.
The sundial was designed and made by W.J. Bosman, then teacher.

The hour scale is split in two. Placing the halves back-to-back creates two open equatorial sundials.
As a result of this, the time may be read even during the equinoxes.

The two hour scales have numerals from 0 to 12 and from 12 to 24 in quarter-hour divisions.
Of course, not all these numerals are actually used in the sundial.
The sundial shows local apparent time.

At noon, a line of light falls through a slit in the upper connecting rod on the date indicator between the two time scales.
This date scale is marked with the dates for every five degrees of solar declination.

There are symbolic representations in the sundial.
On a hemisphere of the Earth is an hourglass, representing Time.
The two rings over it represent Eternity.
The clamp for the latitude adjustment is shaped into a dragon’s head, representing threats to Existence.