12 May 2008
Anon. A brass escapement model of a Lange 1-type one minute flying tourbillon regulator
Unsigned, probably German, circa 1920
The movement with circular brass plates secured by three cylindrical pillars with blued steel screws, the Lange 1-type one minute flying tourbillon carriage with Earnshaw spring detent escapement with ruby impulse jewel, uncut bimetallic compensation balance with adjustment screws and two cylindrical brass weights, flat blued steel hairspring, ruby endstone, on wooden base and under a glass dome, unsigned
Movement 110 mm. diam., base 210 mm. diam., overall height approx. 200 mm.
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For an illustration of the Lange-1 type tourbillon carriage see Das Tourbillon by Reinhard Meis, p. 46.
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