A W & S Jones Waywiser, English, first quarter of the 19th century. Signed to dial W & S Jones 30 Lower Holborn, London, with silvered dial divided for Furlongs and Miles, six-spoke wheel, mahogany fork body with shaped top and bar handles
RR
c. 1820
The "Waywiser," a surveyor's measuring device. Surveyors today use a Waywiser (also known as an Odometer or a Perambulator) to measure linear distances on the ground and the dial measures in yards (the longer of the two hands), poles (an antiquated term interchangeable with rods, 16.5 feet, 320 poles per mile), furlongs (220 yards), and miles. The iron-rimmed wheel is 31.5 inches in diameter, covering 99 inches with each revolution, or one pole in each two turns, and can be removed for transporting the instrument. The engraved, silvered dial and steel hands are connected to a clock-like movement, which in turn is driven by an iron shaft running up the inside of one of the wheel supports.
Makers label as shown in image six not on this waywiser.

W & S Jones Nationality: British .Brief Bio: active 1791-1859, optician, mathematical and philosophical instrument maker, London, England : Traded at 27 Holborn Hill; 135 Holborn, next Furnival's Inn (1792-1800); 30 Holborn (1800-60); 32 Holborn Hill (1801-5) & 30 Opposite Furnival's Inn, Holborn, Archimedes, 30 Lower Holborn (1852), all London, England. Partnership of William (w.1787) and Samuel Jones.
Height32.00 inch(81.3 cm)
Width53.00 inch(134.6 cm)
Depth12.75 inch(32.4 cm)
Ref No. 6751