McArthur portable microscope

1955-1957

McArthur portable microscope

1946

McArthur portable microscope

1935-1937

McArthur microscope

1954

Hand-held microscope, early 1930s.

1930-1935

Open University McArthur microscope and accessories

1972

McArthur portable microscope

1930

McArthur portable microscope

1972

McArthur portable microscope

1983

McArthur portable microscope

1934-1936