Heart-shaped ivory sundial with a gilded brass covering. Under the covering lid there is a depiction of a fox or a hound leaping over a sea of fire.
The hour lines are laid out in black for a horizontal sundial with the hours indicated in red in the sequence 5 to 12 to 7. The string gnomon is missing.
In the centre of the dial is a simple magnetic compass with the maker's mark and two lines indicating the north-south direction and the magnetic variation.
The sundial (previously catalogued as A 232) was acquired by Museum Boerhaave in 1939.
Robert van Gent