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. 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