A VICTORIAN LACQUERED BRASS PORTABLE MONOCULAR MICROSCOPEC.W. DIXEY, LONDON, MID 19th CENTURYThe body tube attached to the cylindrical upper limb via rack and pinion principle focus slide incorporating calibrated fine adjustment screw at the base of the cylinder, the rectangular stage with dovetail slides for subject positioning and the substage assembly fitted with a revolving disc pierced with three graduated apertures, the underside with telescopic fitment for the pivoted plano-concave mirror, the whole raised via an axis pivot joint on a architectural columns upright applied to a disc fitted with three horizontal rectangular supports with two hinged to allow them to be folded back for storage and one engraved C.W. Dixey, Optician to the Queen, New Bond Street to upper surface, the horizontal mahogany box fitted to take accessories including two objective cannisters, spare eyepiece, substage prism attachment, forceps, tweezers and light condenser with stand.The box 13cm (5ins) high, 41cm (16ins) wide, 19,5cm (7.75ins) deep.Charles Wastell Dixey is recorded in Clifton, Gloria Directory of British Scientific Instrument Makers as working from 335 Oxford Street in 1838 then 3 New Bond Street, London 1839-62. He exhibited at The Great Exhibition of 1851 and gained the Royal Warrant as optical and mathematical instrument maker to Queen Victoria. In 1862 the business became 'Dixey & Sons C.W.'; Charles Wastell Dixey subsequently died in 1880.