https://digital.sciencehistory.org/works/nj2ab6z Hemoglobinometer https://creativecommons.org/licenses/by/4.0/ C. A. Hausser & Son Circa 1940 Hemoglobinometer with three glass bottles, lenses, tubing, and a tally counter, stored in a leather case. These apparatuses were used in the early 20th century to measure hemoglobin levels in blood. Blood samples would be taken, diluted, and compared to tinted glass on the hemoglobinometer's comparator slide to determine hemoglobin level. 8.4 cm H x 16 cm W x 12.7 cm L (closed box) 5.7 cm H x 11 cm W x 6 cm L (hemoglobinometer) Pennsylvania--Philadelphia Science History Institute Hematology Hemoglobin Medical instruments and apparatus C. A. Hausser & Son Measuring instruments Pathology physical_object medical instruments and apparatus https://digital.sciencehistory.org/downloads/deriv/sfblkua/thumb_large_2X?disposition=inline https://digital.sciencehistory.org/works/nj2ab6z https://creativecommons.org/licenses/by/4.0/ medical instruments and apparatus https://digital.sciencehistory.org/downloads/deriv/sfblkua/download_full?disposition=inline https://digital.sciencehistory.org/downloads/deriv/s716lcr/download_full?disposition=inline https://digital.sciencehistory.org/downloads/deriv/qmcbubo/download_full?disposition=inline https://digital.sciencehistory.org/downloads/deriv/ncwconj/download_full?disposition=inline https://digital.sciencehistory.org/downloads/deriv/y69fe5f/download_full?disposition=inline https://digital.sciencehistory.org/downloads/deriv/7336llu/download_full?disposition=inline https://digital.sciencehistory.org/downloads/deriv/jm12y5e/download_full?disposition=inline