Antique A.W. Dover Heeling Error Vertical Force Instrument VFI Marine Compass

This listing features an antique A.W. Dover Heeling Error Vertical Force Instrument (VFI), which functions as a specialized marine compass. Likely manufactured by A.W. Dover, a maker known for precision instruments, possibly from Rochester, Kent as indicated by some examples of their work.

This historical navigational tool was designed for use on ships to accurately measure and compensate for magnetic deviations caused by the vessel's rolling or 'heeling' motion, crucial for maintaining correct course readings at sea.

The instrument itself is crafted from brass, showcasing an aged patina consistent with its vintage. It is housed within its original fitted wooden case, which exhibits wear, surface marks, and a classic leather strap, all indicative of its age and use.

Please review all accompanying images thoroughly to assess the cosmetic condition of this unique historical artifact. It is presented as a collectible piece, ideal for enthusiasts of nautical history or antique scientific instruments.