Description
Historical measuring instrument, 19th century, marked "Wattmetre Triphase" on the dial. In a wooden case with glass insert, rubbed & bumped, 37 x 33 x 22 cm
4796
Historical measuring instrument, 19th century, marked "Wattmetre Triphase" on the dial. In a wooden case with glass insert, rubbed & bumped, 37 x 33 x 22 cm
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