A lacquered and patinated brass polarizing monocular
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Description
A lacquered and patinated brass polarizing monocular microscope J. Swift and Son, London, circa 1900 The lacquered brass body tube with rack and pinion coarse and fine top-screw focus adjustment and twin prism slides fitted to the complex patinated brass limb above circular rotating black opaque glass inset stage divided for degrees to the outer edge, with sub-stage condensor incorporating prism and pivoted plano-concave mirror to underside, mounted via a hinge joint onto tripod base incorporating looped rear support engraved J. SWIFT & SON, 81 TOTTENHAM COURT RD, LONDON to upper edge, height 34.5cm (13.5ins) approx; with original mahogany box fitted with some accessories, the box 36cm, (14.25ins) high. The firm of J. Swift and Son was founded in 1853 by John Powell Swift, his son, Mansell James, joined the company in 1884. J. Swift and Son supplied microscopes for Captain Scott's 1901-4 expedition to the Antarctic on the R.R.S. Discovery. The business continued under the management of subsequent generations before being merged with E.R. Watts and Son in 1946 and was bought-out by John H. Bassett in 1968.
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A lacquered and patinated brass polarizing monocular
Estimate £120 - £180
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