5 dropper handles (2 rubber and 3 plastic), from the portable laboratory owned by Dr. H.G Butterfield, unsigned, 1930-1940 5 dropper handles (2 rubber and 3 plastic) 1930-1940
2 crayons (one blue and one red), from the portable laboratory owned by Dr. H.G Butterfield, unsigned, 1930-1940 2 crayons (one blue and one red) 1930-1940
Glass haemocytometer, from the portable laboratory owned by Dr. H.G Butterfield, by C. Zeiss, Jena, Germany, 1930-1940 Glass haemocytometer 1930-1940
Glass tube with rubber bung, from the portable laboratory owned by Dr. H.G Butterfield, by Hawksley & Sons, London, England, 1930-1940 Glass tube with rubber bung 1930-1940
3 steel safety pins, from the portable laboratory owned by Dr. H.G Butterfield, unsigned, 1930-1940 3 steel safety pins 1930-1940
6 steel blades, from the portable laboratory owned by Dr. H.G Butterfield, unsigned, 1930-1940 6 steel blades 1930-1940
Rubber support block for 3 test tubes, from the portable laboratory owned by Dr. H.G Butterfield, unsigned, 1930-1940 Rubber support block for 3 test tubes 1930-1940