"M. Allard" Month Duration Astronomical Regulator, Rue de St. Antoine, Paris, c. 1825, figured walnut case and architectural top with a molded cornice, dentil and carved corners, glazed sides and full-length front door and base with fluted corners and flat base molding, rear access doors to the weight channel with pulley mounted on roof board, the 10-in. dia. silvered brass Roman numeral dial within a gilt bezel engraved Allard, four hands off the center indicating hours, minutes, sweep seconds with blued steel hands, and a gilt hand for the equation of time, geared calendar mechanism mounted below in a silvered semicircle calibrated ring with the equation of time ellipse behind, month duration single train movement with rear mounted escape wheel and removable dead-beat pallets, all powered by a single flat lead weight within a rear compartment and regulated by a temperature compensating grid iron pendulum with two flat gilt-brass and one flat steel rod, 9 1/2-in. dia. gilt pendulum bob with internal thermometer under glass, steel indicating needle and calibrated dial all suspended by a steel knife edge set on a "T-bridge" and reading against a silvered beat scale stating Degres du Cercle, ht. 84 1/2 in. Note: The lower rear door which opens for access to the weight is inscribed in chalk, "M. Allard, Rue St. Antione".
"M. Allard" Month Duration Astronomical Regulator, Rue de St. Antoine, Paris, c. 1825, figured walnut case and architectural top with a molded cornice, dentil and carved corners, glazed sides and full-length front door and base with fluted corners and flat base molding, rear access doors to the weight channel with pulley mounted on roof board, the 10-in. dia. silvered brass Roman numeral dial within a gilt bezel engraved Allard, four hands off the center indicating hours, minutes, sweep seconds with blued steel hands, and a gilt hand for the equation of time, geared calendar mechanism mounted below in a silvered semicircle calibrated ring with the equation of time ellipse behind, month duration single train movement with rear mounted escape wheel and removable dead-beat pallets, all powered by a single flat lead weight within a rear compartment and regulated by a temperature compensating grid iron pendulum with two flat gilt-brass and one flat steel rod, 9 1/2-in. dia. gilt pendulum bob with internal thermometer under glass, steel indicating needle and calibrated dial all suspended by a steel knife edge set on a "T-bridge" and reading against a silvered beat scale stating Degres du Cercle, ht. 84 1/2 in. Note: The lower rear door which opens for access to the weight is inscribed in chalk, "M. Allard, Rue St. Antione".
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