Haemacytometer, Paris, France, 1874
1874
Haemacytometer, Philadelphia, United States, 1900-1980
1900-1980
Thoma circular moat haemocytometer
Thoma's haemacytometer
Thoma haemacytometer, Germany, 1891-1930
1891-1930
Thoma haemacytometer
Haemacytometer, cased
Thoma Zeiss haemocytometer with pipettes
Haemacytometer, cased, by Zeiss, German
Haemacytometer, Tiefe, in leather case
1801-1900
A Thoma haemacytometer capillary pipette
1891-1930