Austrian chronometer with power reserve indicator Circa 1900

Open faced heavy 18k gold pocket watch by Brothers Klumak
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An Austrian heavy lever chronometer with 32h power reserve indicator, circa 1900.
18k gold engine turned case with monogram; white signed enamel dial with Roman hours, sunk subsidiary dial for Arabic seconds, sunk subsidiary dial for the power reserve indicator and gold spade hands; bridge movement and a large compensation balance with gold and platinum screws.
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Diameter: 56 mm
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Weight: 165 g
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Signed: Brüder Klumak Wien
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Brothers Klumak in Vienna
Together with Joseph Nicolaus in Vienna, the Klumak brothers can be counted amongst the pioneers of Austrian precision watchmaking and like Nikolaus they were chronometer makers to the Imperial and Royal Navy.
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The fine adjustment mechanism used in this watch is extremely sophisticated and very beautiful to look at.