


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

Electro-medical machine 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

Pocket microscope by John Browning

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

Eyepiece micrometer for telescope

Brass tube with adjustable aperture at one end
1850-1924

Microspectroscope by John Browning
1851-1900

Polarizing microscope by John Browning
1851-1900

Sorby-Browning micro-spectroscope in case

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

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

Microscope signed "John Browning London 377"

absorption tube for spectroscope

Binocular body tube of Stephenson type
1860-1875

Micrometer eyepiece
1851-1900

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

Direct vision spectroscope
1885-1895

Coloured slide (in case) showing various absorption spectra
1850-1900

Set of 6 tubes for spectrum analysis
1850-1900

Set of 12 tubes for spectrum analysis
1850-1900

Automatic solar spectroscope with case by John Browning late
1875-1885

Spectroscope, simple small brass, in case. No.7448
1900-1980

Thermopile, with moving magnet galvanometer

Norman Lockyer’s Seven-Prism Spectroscope and Eyepiece
1868
Photomicrographic attachment
circa 1890
3 sets of tubes for spectrum analysis and one coloured slide (in case) showing various absorption spectra in gelatine
1850-1900
High power direct vision portable spectroscope made by John Browing
1869-1871
Spectroscope from Norman Lockyer Observatory for solar work
1878
Refracting telescope of 3-inch aperture, with components, case and tripod
1851-1900
Two-prism spectroscope
1885-1895
Direct-vision spectroscope by John Browning
1870-1940
Three-prism spectrometer by John Browning
1870-1940
Microscope accessories by Zeiss, Powell & Lealand, and Leitz
Rigid spectroscope by John Browning
Set of twelve tubes containing comparison sample solutions for use with a spectroscope
1871
Spectroscope by Browning for Aurora
1870-1890