Smalll Victorian Monocular Field Microscope

Victorian brass cased Aneroid barometer by Stanley, London. Brass cased aneroid barometer housed in the original leather fitted case. Silvered dial with original ‘blued’ st...

Fine Georgian mahogany bow fronted stick barometer. Bow fronted glass set in front of the silvered register plate with sliding vernier controlled by an ivory turned knob. Concertina ...

George III stick barometer in a finely figured mahogany case with canted corners and architectural pediment surmounted by a central ivory finial. Exposed mercury tube with bulb ciste...

Pre World War I Nautical Compass by E.S.Ritchie Nautical compass mounted by a brass gimbal into a copper brass bound case with sloping glazed aperture with heavily bevelled glass. Flat brass bezel with five holding screws signed ‘E.S.Ritchie’ and numbered 5779. Side opening compartment for a lighted wick with drawer beneath. The compass is mounted in a heavy painted brass bowl with very fine copper pivot supporting the floating direction card. A diaphragm is located in the base of the bowl for temperature compensation. c.1910 E.S.Ritchie founded the business in 1850 to manufacture mechanical, electrical and scientific instruments. In 1857 he turned his attention to navigational instruments and begun making marine bearing compasses for the U.S.Navy before the American civil war. At the time the British admiralty dry mounted nautical compasses were considered by all navies and commercial shipping companies as the highest technological standard of the day, however, in 1860 Ritchie had received a US patent for the first successful and practical liquid-filled marine compass for general use. A major step forward in the technology of the compass. With the damping provided by the liquid, together with gimbal mounting, the floating card of the Ritchie compass...

A very clean and complete Dancer field microscope designed to fit into a small case for use in the field. This example is numbered 38 and has a Wenham prism that neatly slides into ...

This is an antique scientist's field microscope. An English, brass, pocket instrument, dating to the Edwardian period, circa 1910. Appealing brass ...

This is a vintage cased monocular. A French, enamelled brass and leather viewing scope, dating to the Art Deco period, circa 1930. Delightful field monocular, with 8 x 30 magnificat...

This is an antique scholar's microscope. An English, brass and enamelled metal scientific instrument by Henry Crouch, dating to the late Victorian period, circa 1900. Appealing micr...