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glass, mercury, tin, wood
This Replica Mercury Cistern Barometer, dating from the late twentieth century, is a modern interpretation of the classic wall-mounted mercury barometer, probably produced by the Dutch family-owned company H. N. Rose — one of the oldest manufacturers of meteorological instruments in the Netherlands, whose history spans more than a century and four generations of craftsmen specializing in the manufacture, repair, and restoration of barometers, thermometers, and clocks. Despite its relatively recent date of manufacture, the instrument deliberately reproduces the constructional and artistic traditions of eighteenth- and nineteenth-century Dutch mercury barometers, combining historical authenticity with the high standard of modern hand craftsmanship.
The case is made from solid oak and is distinguished by its remarkably austere, almost architectural geometric design. Unlike the majority of traditional rectangular stick barometers, the composition is based on the interplay of straight surfaces and symmetrical cut-outs along the side edges. The upper section terminates in a pronounced triangular pediment, while the lower end finishes in a similar but considerably smaller triangular projection, giving the entire instrument a harmonious and well-balanced silhouette.
Particularly noteworthy is the lower section of the case, where a small open recess, or “pocket,” has been formed to accommodate the glass mercury cistern. This ingenious arrangement not only protects the most vulnerable part of the instrument but also leaves it partially exposed, emphasizing the operating principle of the traditional mercury barometer.
The upper section of the case is fitted with a decorative register plate made of pewter. The choice of this material is entirely intentional. The maker consciously refers to the historic Dutch tradition of producing luxurious bakbarometers during the eighteenth and nineteenth centuries, in which cast or stamped pewter register plates were among the most distinctive constructional features. In keeping with this tradition, the register plate is secured not by conventional screws but by small pewter nails. With its refined matte silvery appearance, the pewter provides a striking contrast to the warm colour of the oak, creating an elegant composition while reinforcing the instrument’s historical character.
The barometric scale is engraved directly into the surface of the pewter register plate and is calibrated in millimetres of mercury, covering a range from 720 to 800 mmHg. The scale is especially notable for its exceptionally detailed weather indications, consisting of ten traditional Dutch terms:
This unusually detailed terminology considerably exceeds the five to seven weather indications commonly found on most domestic barometers, making the interpretation of the instrument’s readings particularly clear and informative.
To monitor changes in atmospheric pressure, a slender metal trend indicator rod is mounted on the right-hand side of the register plate. A decorative sliding marker moves along the rod and, once positioned opposite the current mercury level, allows the observer to determine the direction of pressure change during subsequent observations.
The heart of the instrument—the long barometer tube—runs precisely along the centreline of the case and is secured by two elegant decorative metal clips, which both firmly support the glass tube and complement the overall aesthetic of the instrument.
Particular attention should be paid to the lower glass cistern, whose exceptionally graceful form is one of the instrument’s defining features. Its elongated bottle-shaped reservoir contains a substantial quantity of mercury, ensuring the stable operation of the barometer. To place the mercury reservoir in communication with the atmosphere, the cistern is fitted with a small lateral spout, closed by a tiny glass stopper.
Despite its modern origin, the instrument faithfully reproduces the principal constructional features of historic Dutch mercury barometers. The geometrically disciplined oak case, traditional pewter register plate, long glass barometer tube, exposed cistern, and characteristic Dutch weather scale combine to form a harmonious composition in which historical authenticity is matched by the high standard of contemporary craftsmanship.
This instrument is an outstanding example of a modern replica of the classic Dutch mercury cistern barometer, executed with deep respect for the national traditions of instrument making. The noble materials, restrained architectural design, historically accurate register plate, and carefully reproduced construction make it not only a fully functional scientific instrument but also a worthy continuation of the centuries-old Dutch tradition of mercury barometer manufacture.
