{"id":"nj2ab6z","internal_id":"f9c8aa2b-f07a-4844-a3c9-1b1ddd0dadce","links":{"img_thumbnail":"https://digital.sciencehistory.org/downloads/deriv/sfblkua/thumb_large_2X?disposition=inline","html_self":"https://digital.sciencehistory.org/works/nj2ab6z"},"title":"Hemoglobinometer","additional_title":[],"format":["physical_object"],"genre":["Medical instruments and apparatus"],"medium":["metal","glass (material)","rubber (material)","leather","elastic (textile material)","cloth"],"extent":["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)"],"language":[],"provenance":"","subject":["Hematology","Hemoglobin","Medical instruments and apparatus","C. A. Hausser & Son","Measuring instruments","Pathology"],"department":"Museum","series_arrangement":[],"rights":"https://creativecommons.org/licenses/by/4.0/","rights_holder":"Science History Institute","digitization_funder":"","file_creator":"Auerbach, Jahna","description":"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.","description_html":"<p>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.</p>","published_at":"2026-06-23T20:02:26Z","updated_at":"2026-06-23T20:02:26Z","creator":[{"category":"manufacturer","value":"C. A. Hausser & Son"}],"date_of_work":[{"start":"1940","start_qualifier":"circa","finish":"","finish_qualifier":"","note":"","formatted":"Circa 1940"}],"place":[{"category":"place_of_creation","value":"Pennsylvania--Philadelphia"}],"inscription":[],"related_link":[],"additional_credit":[],"physical_container":null}