M0016619: Illustration of the regulating stopcock and mixing chamber of Hewitt's apparatus for nitrous oxide and oxygen from 1897
- Date:
- 1958
- Reference:
- WT/D/1/20/1/149/68
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: M0016619: Illustration of the regulating stopcock and mixing chamber of Hewitt's apparatus for nitrous oxide and oxygen from 1897. Source: Wellcome Collection.
