Farmer's ring silver and brass

The invention of this portable sundial is attributed to monks in the forests of Prussia in 1721.

How it works: Turn the sliding ring until the hole shows the current month. Hang the side of the clock with the small hole in the direction of the sun. A sharp point of light appears on the time scale inside the ring and shows the WOZ (true local time): the morning hours on the left, the afternoon hours on the right.

Very attractive as a necklace - a ribbon to hang it on is included.

Instructions for use are included.

Diameter: 26 mm
Material: brass inside; 925 sterling silver outside