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Details
A barograph,
by Jules Richard, of small size, the lacquered-brass and nickel-plated mechanism with 2in. diam. recording drum, contained in a glazed mahogany case with carrying handle -- 7in. (17.8cm.) wide
See Illustration
by Jules Richard, of small size, the lacquered-brass and nickel-plated mechanism with 2in. diam. recording drum, contained in a glazed mahogany case with carrying handle -- 7in. (17.8cm.) wide
See Illustration