Ionisation chamber unscrewed to show components.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Ionisation chamber unscrewed to show components. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Ionisation chamber unscrewed to show components. Wellcome Collection. Source: Wellcome Collection.