French Optical Pyrometer, E. Ducretet, Paris, silvered scale rotating around the central lens, brass shaft with maker's plaque, housed in the original velvet-lined case with extra lens. Clocks, Watches & Scientific Instruments online
French Optical Pyrometer, E. Ducretet, Paris, silvered scale rotating around the central lens, brass shaft with maker's plaque, housed in the original velvet-lined case with extra lens. Clocks, Watches & Scientific Instruments online
/544/1219544.jpg "Source: Bonhams | Skinner")
/568/1219568.jpg "Source: Bonhams | Skinner")
/569/1219569.jpg "Source: Bonhams | Skinner")
/582/1219582.jpg "Source: Bonhams | Skinner")
/586/1219586.jpg "Source: Bonhams | Skinner")
/598/1219598.jpg "Source: Bonhams | Skinner")
/609/1219609.jpg "Source: Bonhams | Skinner")
/621/1219621.jpg "Source: Bonhams | Skinner")
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
