Thoma haemacytometer counting chamber, by C. Zeiss, German, 1891-1930 Thoma haemacytometer counting chamber 1891-1930
Leatherette case for Thoma haemacytometer, by C. Zeiss, German, 1891-1930 Leatherette case for Thoma haemacytometer 1891-1930
Sahli(?) haemaglobinometer set in leatherette case, supplied by C. Baker, London, English, 1891-1930 Sahli(?) haemaglobinometer set in leatherette case