Maritime Pocket Compass
These maritime pocket compass instruments are portable navigational tools designed to guide travellers and sailors across the seas.
Maritime Pocket Compass
A maritime pocket compass is a compact navigational instrument enclosed in a small case for portability. The examples on this page span the Georgian and Victorian periods, including pieces from the eighteenth and nineteenth centuries.
Many of these instruments combine a magnetic needle with a sundial, taking forms such as folding pocket sundials, diptych dials and circular wooden cases. Travellers and explorers relied upon these portable devices for orientation before modern electronic navigation.
The version most commonly met on this page is the brass or mahogany cased combination of compass and sun dial. These pieces reflect the scientific instrument making traditions of English workshops from the eighteen hundreds onwards.
Materials and construction
These instruments utilise turned wood such as mahogany and treen for protective outer cases, occasionally lined with velvet or leatherette. Brass forms the structural body and dial plates of the scientific mechanisms.
Paper dials sit beneath glass covers to display directional markings and graduations. Makers inscribed delicate compass roses and sundial scales onto these paper faces by hand or with early printing methods.
Maritime Pocket Compass Retail Price Guide 2026
Typical asking prices for maritime pocket compass among the pieces listed under this phrase on Sellingantiques today, from the lower quarter to the upper quarter. They describe what is for sale here now, not the wider market.
Measures of quality
Quality in these scientific instruments rests upon the crispness of the engraved paper dials and the precision of the brass work. Finer examples display sharp, legible lettering and smooth mechanical joints on folding diptych components.
The choice of housing also separates standard items from finer works, with solid mahogany and well-preserved leatherette cases indicating higher status. Original glass covers and intact paper faces maintain the integrity of the piece.
Baker London·Samuel Porter·Stanley London
The Maritime Pocket Compass Glossary
- Theodolite
- A precision optical instrument for measuring angles, featuring in nineteenth century scientific equipment alongside compasses.
- Diptych-dial
- A portable sundial and compass combination constructed in two hinged leaves that fold flat into a case.
- Treen
- Small handmade wooden household objects and utilitarian items, shaping the housings of certain pocket compasses.
- Butterfield Type
- A specific style of folding pocket sundial featuring a bird-shaped gnomon and an engraved dial plate.
Maritime Pocket Compass: Frequently Asked Questions
What is a maritime pocket compass?
A maritime pocket compass is a portable navigational instrument housed in a small case, often combined with a sundial for determining direction and time.
These pieces date from the eighteenth and nineteenth centuries and were used by travellers and explorers.
How do you use a diptych dial?
A diptych dial opens on a hinge to reveal a compass inset alongside a sundial face. Raising the internal gnomon allows the sun to cast a shadow for timekeeping while the compass aligns the device to magnetic north.
Most surviving examples retain their original folding mechanism and paper dial faces.
What materials are these compasses made from?
The housings utilise mahogany, treen and brass, complemented by interior linings of velvet or leatherette. Glass protects the delicate paper dials mounted inside.
Makers selected these durable materials to withstand travel at sea and on land.
How do you date an antique compass?
Dating relies upon the recorded period, material characteristics and maker signatures inscribed on the paper dial or brass plate. Instruments from the Georgian and Victorian eras exhibit distinct construction methods and typography.
Signed pieces by makers such as Samuel Porter or Stanley provide a direct link to specific workshops.