THE BLUED STEEL IS A SHADE OF DARK BLUE DUE TO OXIDIZATION BY HEATING OF A PIECE OF STEEL.

The result varies: the blue can be more or less dark, and depends on the temperature to which the piece is exposed. Other colours can come out from this process: yellow and grey. This technique is specific to the industrial world, but is also frequently used in the horology’s. The method changes the aspect of the metal. Although diverse shades of colours are possible: the blue remains used most of the time for the manufacturing of a hand steel watch. The use of the blued steel occurs in the TIEFENMESSER collection.

It takes its inspiration from the materials that feature so prominently in submarine equipment: the steel of the instruments measuring pressure and depth, the bronze and brass of a periscope. All of these being the hallmark of what makes these models so unique. The two TIEFENMESSER models have a white dial, a blue steel hand, industrial-style black and blue index markings, aged leather straps and a single aperture for the hour. The power reserve here is displayed in the form of a mechanical gauge with a red background. Both these two submersible models are watertight to 50 metres. The use of the blued steel is referring to submarine materials, and to the depth blue colour. The blued steel is a perfectly natural material, very resistant and of a rare aesthetic.

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