Miniature Dolland Portable Sundial
The original is in the London Science Museum. Instruments like this were once used by explorers and navigators to tell the time anywhere in the world. For this to be possible, the gnomon, which casts the shadow, can be set for latitude on a sliding scale and the whole instrument oriented for direction by means of a magnetic compass in the base. A spirit level and height adjustable legs ensure that the instrument is used upright.
Supplied in a box measuring 10cm square, 6cm tall.