Hourglass in red leather covered case, second of two views.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Hourglass in red leather covered case, second of two views. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Hourglass in red leather covered case, second of two views. Wellcome Collection. Source: Wellcome Collection.