Barometers Realm

Before us is a characteristic and expressive Blackletter Dial Aneroid Barometer, dating to approximately 1870, manufactured by the well-known English firm F. Darton & Co., representing an early type of wall-mounted instrument with distinctly decorative typography and a traditional mechanical architecture.

The barometer is housed in a barrel-shaped brass case, which lends the instrument visual appeal while simultaneously emphasizing its practical purpose. The surface of the case has a soft golden tone with natural traces of age. At the top, a suspension ring mounted on a hinged bracket allows for convenient wall placement.

The front is fitted with a thin brass bezel, mounted onto the body of the instrument. The bezel holds a flat mineral glass protecting the dial. At the centre is a brass trend indicator with a brass pointer, complemented by a knurled adjustment knob, allowing the user to manually set the previous pressure reading — an important functional feature for observing changes in weather.

The dial is made of silvered brass and is distinguished by its expressive graphic design. The barometric scale is graduated in inches of mercury, ranging from 28 to 31 inches, with each inch finely divided into tenths, allowing for reasonably precise readings.

Of particular artistic interest is the textual weather indication, executed with a striking variety of typefaces. The word Change is rendered in large capital letters in a classical Gothic blackletter typeface (the so-called “Old English” or Fraktur style), highly characteristic of 19th-century barometers. The lettering exhibits a heavy plasticity: vertical and main strokes are markedly thick and deeply black, while connecting and diagonal elements are reduced to thin, almost hairline strokes.

The words Stormy and Very Dry are executed in the same Gothic blackletter style, though here the letters are somewhat smaller and vertically elongated, reflecting their placement closer to the edge of the dial and the need to follow the arc of the scale.

Particularly noteworthy are the words Rain and Fair, representing the most decorative variant of the design. Here the same blackletter is taken to an extreme degree of ornamentality: the letters appear interwoven, forming a complex ligature-like composition. Thick black strokes intersect at various angles, creating the impression of entwined symbols. This is the most decorative and at the same time the least legible element of the entire scale, reflecting the characteristic Victorian taste for graphic excess.

In the lower part of the dial is an arched mercury thermometer with a Fahrenheit scale, harmoniously integrated into the composition of the instrument and enhancing its functionality.

The movement represents an early type of aneroid construction. At its core is a nickel silver aneroid capsule, tensioned on a massive cast-iron lever, the lower part of which rests on a steel coil spring. The transmission of motion to the pointer arbor is achieved by means of a fusee chain — a characteristic solution for barometers of this period. The name of the company is stamped on the surface of the main lever, serving as an additional confirmation of the instrument’s authenticity.

This F. Darton & Co. barometer represents an expressive example of early aneroid instrument making, in which functional precision is combined with vivid decorative graphics. It reflects both the technical level of its time and the aesthetic preferences of the Victorian era, occupying a worthy place in any collection of historical scientific instruments.