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Optical: Microscopes & Magnifiers

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Cased Carl Zeiss Jena Paraboloid condenser c.1900. Black Leather covered case emblossed with Carl Zeiss Jena logo and 'Paraboloid Kondensor'. Fitted interior lined with blue velvet. 3-Piece set marked 'Objekttragerdicke 0.9-1.0 Nr.8207. Case size; 7.5cm x 6.5cm x 3.5cm. £95 ($190)

Victorian folding brass pocket magnifying glass. Ingenious idea, but clearly one that didn't take off! Compacted size of 55mm extending to 95mm when opened. £95 ($190)

Small Georgian ‘simple’ or pocket microscope. This is a beautifully crafted little piece with a brass body, two lenses and a turned ebony handle. The brass end is approx 22mm deep and has a screw threaded Coddington style lens at each end. Both of the brass lens mounts have a ribbed edge to them. We managed to unscrew one end, but the other is very tight. Looking through the lenses at an object held close up to it the magnification is quite astounding!! Total length of this piece is just 74mm and it sits very nicely in the hand. £350 ($700)

Victorian magnifying glass. Brass fame and mount. Length: 9.5cm, lens 4cm diameter. £88 ($176)

Victorian photographic focussing glass with rope twist design. Circa 1890. Length closed 55mm, extended 77mm. £88 ($176)

Brass lacquered microscope with black japanned base circa 1900. Rack and pinion focusing , 3-stage object lens, circular stage has a sub-stage of wheel stops. Concave mirror swings out on a compass joint that can position the mirror above the stage for illuminated reflection. Original mahogany box. Style similar to that produced by the American company 'Tighe', but this model has no identifying marks other than the number '35' stamped into the base. £170 ($340). Height 23cm.. Box 25.5cm x 11.5cm x 8.5cm.

Students boxed microscope with 2-stage object lens and rack and pinion focusing. Brass retains much original lacquer with black japanned base. Circa 1900. No identifying marks other than the numbers '37' and '4' stamped on the base. Original mahogany box. £160 ($320) Height 18cm. Box 20.5cm x 10cm x 7.5cm.

Early students microscope with 3-stage object lens and friction focusing in original mahogany box. Original green and orange paint and brass retains much original lacquer. Circa 1880. £125 ($250) Height 17.5cm. Box 19cm x 9cm x 7.5cm.