18th Century precision pendulum-regulator, equation of time, Goddess of Geometry, by Langerhans à Crefeld, c. 1790.

No 155. A fine and rare 18th Century precision pendulum-regulator, equation of time, Goddess of Geometry, by Langerhans à Crefeld, height 1920 mm, ca. 1790

A very fine, important, extremely decorative precision pendulum regulator with equation of time, date indicator and 30 days power reserve in a remarkable case. The case is birch burl wood veneered on oak, upright rectangular case, profiled, applied ornament panels to the sides, brass strips, tapered front door with glazed pendulum aperture.

The clock and bronze: Profiled upper part with drum-shaped clock on a cuboid base, flanked by two leaf gilded figures: on the left is the Goddess of Geometry, a personalised allegory of the seven liberal arts, holding an isosceles triangle and a pen; on the right is a putto holding a flower garland. Gilt brass bezel with bead decor and domed glass over the dial. Dial: enamel, radial Roman hours, signed, window for date, blued snake-shaped steel hand for the centre seconds, blued snake-shaped steel hand for the minutes, gilt and pierced hand for the mean solar time, gilt and pierced hand for the hours. A rectangular brass full plate movement, signed, solid circular movement pillars, pin wheel escapement, weight winding via pulley, knife edge suspension, rare and heavy gridiron pendulum with 4 brass rods and 4 steel rods, adjusting device for pendulum, temperature indicator, heavy brass pendulum bob. The case, dial and movement are authentic and in a very good condition.
Price on request.