A late 19th-Century Scottish anenometer
A late 19th-Century Scottish anenometer, signed on the horizontal face No.1469 AIR METER W.J. HASSARD GLASGOW , with circumference scale and five subsidiary scales, each with fine blued-steel needle, the vertical vane wheel mounted on the side, also with adjustable alidade arm, raised on a circular base with central threaded mounting aperture, in a mahogany box, the inside of the lid inscribed in ink W. KEY 1888 -- 11.2cm. (4 3/8in.) wide
A late 19th-Century Scottish anenometer
A late 19th-Century Scottish anenometer, signed on the horizontal face No.1469 AIR METER W.J. HASSARD GLASGOW , with circumference scale and five subsidiary scales, each with fine blued-steel needle, the vertical vane wheel mounted on the side, also with adjustable alidade arm, raised on a circular base with central threaded mounting aperture, in a mahogany box, the inside of the lid inscribed in ink W. KEY 1888 -- 11.2cm. (4 3/8in.) wide
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
