An oxidised and lacquered-brass mining airflow meter,

Details
An oxidised and lacquered-brass mining airflow meter,
unsigned, the silvered dial with five subsidiary dials inscribed No. 3136, with eight aluminium-bladed impeller, the dial supported from the base by three turned pillars, with staff mounting attachment, in fitted mahogany case, the inner surface of the lid inscribed Miles W. Hudson, the case with ivorine label inscribed H. Hughes & Son, 59 Fenchurch St. London -- 4½in. (11.4cm.) wide

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