Kendall House Antiques Ltd. has dated this Antique Wooden Pocket Sundial to the 1800s.
The dial-plate with brass gnomon sits on a compass card, signed 'S. Porter Fecit Feby 16 1824 Entered at Stationer's Hall'

All suspended in liquid under a convex glass dome.
Just 5.5cm diameter.
Notes:
Samuel Porter was a prominent English instrument maker active in the early 19th century. His dials are often signed "S. Porter Fecit" and frequently carry the date February 16, 1824.
Before modern copyright laws, "entering" a work at Stationers' Hall provided a form of intellectual property protection.

Later models may also include the inscription "Patronized by the King," suggesting Porter received royal endorsement during the reign of George IV.
Similar models can be found at Caird Collection, Royal Museums Greenwich and Sir Henry Wellcome's Museum Collection, Science Museum Group.
Kendall House Antiques Ltd. has dated this Antique Wooden Pocket Sundial to the 1800s.
Kendall house antiques a traditional shop in the north cotswold’s market town of chipping campden.
You can view the stock and full dealer information on the Kendall House Antiques Ltd. Profile Page