M0015836: Three examples of the modified version of the focus tube introduced by Sir Herbert Jackson
- Date:
- 1957
- Reference:
- WT/D/1/20/1/141/87
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: M0015836: Three examples of the modified version of the focus tube introduced by Sir Herbert Jackson. Source: Wellcome Collection.
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