|
Image
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Source
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Observations from the source
|
Maker (or retailer)
|
|
|
R & J Beck’s catalogue (1920s – 1930s)
|
Portable
microscope
|
Beck
|
|
|
A. Clarkson
& Co’s catalogue (1920)
|
Beck
petrological stand
|
Beck
|
|
|
FE Becker’s
catalogue (1924)
|
Petrological microscope, model 22 (from R & J Beck)
|
Beck
|
|
|
R & J Beck’s catalogue (1920s)
|
No. 22,
London petrological microscope
|
Beck
|
|
|
FE Becker’s
catalogue (1924)
|
Model 22
(from R & J Beck)
|
Beck
|
|
|
Gallenkamp’s
catalogue (1939)
|
No. 22,
London microscope (Beck)
|
Beck
|
|
|
R & J Beck’s catalogue (1920s – 1930s; 1930)
|
No. 22,
London microscope (stand 22C)
|
Beck
|
|
|
R & J Beck’s catalogue (1920s; 1920s – 1930s; 1930)
|
No. 22,
London microscope (stand 22B)
|
Beck
|
|
|
R & J Beck’s catalogue (1920s)
|
No. 22,
London metallurgical microscope
|
Beck
|
|
|
J Swift &
Son’s catalogue (1910s)
|
Didaxis
microscope
|
Swift
|
|
|
Watson’s
catalogue (1921)
|
School
microscope
|
Watson
|
|
|
Townson & Mercer’s catalogue (1924)
|
Microscope London model, No. 22
|
Beck
|
