The Compass Sundial

Artikelnummer: 834.KSU-E

Kategorie: Englisches

Knapper Lagerbestand
Lieferzeit: 2 - 3 Werktage (DE - Ausland abweichend)

7,60 €

inkl. 19% USt. , zzgl.

Englische Version des Artikels "Die Kompass-Sonnenuhr" 211.KSU

Cardboard cut-out kit for a double sundial based on 18th century models.

Ingenious combination of two sundials

This form of sundial was developed or rather rediscovered in the 18th century. French watchmakers combined an analemmatic sundial (based on a date scale that shows the different positions of the sun throughout the year) with a conventional horizontal sundial. To do this, the vertical shadow pointer, also called a gnomon, is set to the correct date and the clock is turned until both sundials show the same time. In this way, it is correctly aligned, even without a compass. At that time, such sundials were made individually for certain geographical latitudes, so further south or north they became increasingly inaccurate. Our compass sundial, on the other hand, is different:

For all places from Oslo to Cairo

The compass sundial from AstroMedia can be set to all latitudes between 26° and 65°. The double dial shows the time according to two different methods, which ultimately makes it possible to determine the compass direction. It is possible to read the true local time (solar time) as well as to determine the "normal" time. The compass sundial is self-nordicating and can be set for all locations between Oslo and Cairo.