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Eyepiece micrometer for telescope

Sorby-Browning micro-spectroscope in case

Electro-medical machine by John Browning

McClean's type star spectroscope (patent) by John Browning

Micro-spectroscope with bright point micrometer with adapter tube by John Browning

1885-1888

Solar eyepiece (Herschel wedge) with two dark glass filters by John Browning

1860-1880

Binocular microscope with base and prism housing by C.D. Ahrens and Stephenson body tube by John Browning

1851-1900

Pocket brass spectroscope in leather case

1751-1850

Eleven astronomical eyepieces and one terrestrial eyepiece

1860-1890

Sympalmograph in fitted box

c. 1877

Brass tube with adjustable aperture at one end

1850-1924

Microspectroscope by John Browning

1851-1900

Polarizing microscope by John Browning

1851-1900

Pocket-sized spectroscope, cased, by John Browning

Pocket microscope by John Browning

Portable direct vision spectroscope (high power) with collapsible tripod by John Browning

Thermopile, with moving magnet galvanometer

Automatic solar spectroscope with case by John Browning late

1875-1885

John Browning’s, 1875 'Popular' single prism student spectroscope, with case

1875

Direct vision hand held spectroscope by Browning

1867

Positional filar micrometer by John Browning

1875-1900

absorption tube for spectroscope

Binocular body tube of Stephenson type

1860-1875

Micrometer eyepiece

1851-1900

Direct vision spectroscope

1885-1895

Coloured slide (in case) showing various absorption spectra

1850-1900

Spectroscope, simple small brass, in case. No.7448

1900-1980

Norman Lockyer’s Seven-Prism Spectroscope and Eyepiece

1868

Microscope signed "John Browning London 377"

Set of 27 tubes for spectrum analysis

1850-1900

Set of 11 tubes for spectrum analysis

1850-1900

Set of tubes for spectrum analysis

1850-1900

Set of 6 tubes for spectrum analysis

1850-1900

Set of 12 tubes for spectrum analysis

1850-1900
High power direct vision portable spectroscope made by John Browing, 63 Strand, 1869-71, once owned by William Henry Fox Talbot

High power direct vision portable spectroscope made by John Browing

1869-1871
photomicrographic attachment. Fitted to the objective of the microscope using the microscope lens for taking the picture after it ahd been correctly focused on the ground glass screen. For exposing the negative, the sliding black cover was withdrawn and after the exposure, pushed back. Mostly likely used with paper negative material. John Browning, c.1890

Photomicrographic attachment

circa 1890
Direct-vision spectroscope by John Browning, London, in fitted wooden case (Wellcome transfer number B4490)

Direct-vision spectroscope by John Browning

1870-1940
Refracting telescope of 3-inch aperture, with three eyepieces and solar filter by John Browning, 63 Strand, London in fitted pine case, plus mahogany and brass tripod stand

Refracting telescope of 3-inch aperture, with components, case and tripod

1851-1900
two-prism spectroscope, with accessories, in case (damaged), made by Browning, London, c.1890.

Two-prism spectroscope

1885-1895
Spectroscope from Norman Lockyer Observatory for solar work by John Browning with diffraction reflection grating ruled on speculum metal by D.C. Chapman with engine of Lewis Morris Rutherfurd, 24 April 1878, 17296 lines per inch.

Spectroscope from Norman Lockyer Observatory for solar work

1878
3 sets of tubes for spectrum analysis and one coloured slide (in case) showing various absorption spectra in gelatine, all by John Browning, London, England, 1850-1900

3 sets of tubes for spectrum analysis and one coloured slide (in case) showing various absorption spectra in gelatine

1850-1900
Three-prism spectrometer by John Browning, London, in fitted wooden case, marked "Brit. Mus. (NH)/Min: Dep:/No.1

Three-prism spectrometer by John Browning

1870-1940
Rigid spectroscope by John Browning, constructed for Gassiot

Rigid spectroscope by John Browning

Set of twelve tubes containing comparison sample solutions for use with a spectroscope by John Browning, 111 Minories and 65 Strand, London, England, two tubes dated 1871, in case leather covered case (Wellcome B1473) Contents marked as 1) silver... (?) 2) Cautheride in ether (?) 3) Oxylates of chromium and soda 4) citric acid 5) Purple Wood 6) Magenta Rose analin 7) Magenta [July 10, 1871] 8) Chlorophyl in oil 9) Analin purple 1871 10) Oxydised Haematite July 1871 11) Cochineal and alum July 1871 12) unlabelled pale orange liquid

Set of twelve tubes containing comparison sample solutions for use with a spectroscope

1871
Spectroscope by Browning for Aurora, H.O.^.3. portable form, on brass folding tripod allowing for horizontal and vertical rotation of instrument, direct vision compound prism tube is engraved "John Browning, London. Instrument detachable into 3 parts, telescope prism and collinator, instrument when closed is 18" long and 15" high, when on stand, in fitted mahogany case

Spectroscope by Browning for Aurora

1870-1890
1 P & L goniometer eyepiece, 1 P & L Filar micrometer eyepiece, 1 P & L coverglass micrometer, 1 P & L substage condenser, 1 P & L Nicol prism, 1 Zeiss Browning eyepiece spectroscope, 1 set Leitz objective changers

Microscope accessories by Zeiss, Powell & Lealand, and Leitz