Hand-held microscope, early 1930s.
- maker:
- James Powell Swift, John McArthur and E Leitz
McArthur portable microscope, first metal model, with two objectives, condenser, mirror and fine focus, by John McArthur, English, 1930-1935
McArthur portable microscope, first metal model, with two objectives, condenser, mirror and fine focus, by John McArthur, English, 1930-1935