Details
A black-enamelled brass mining air-flow meter,
the central silvered dial with three subsidiary dials, eight-bladed aluminium impeller -- 4¼in. (10.8cm.) dia., and a similar air-flow meter, in leather case -- 5in. (12.7cm.) wide
the central silvered dial with three subsidiary dials, eight-bladed aluminium impeller -- 4¼in. (10.8cm.) dia., and a similar air-flow meter, in leather case -- 5in. (12.7cm.) wide
Special notice
VAT rate of 5% is payable on hammer price plus buyer's premium.