Citations
Hilger Micrometer Projection Device, undated [c.1939], GBR/0180/RGO 101/2/26, Drawer 2 PC 2: RGO 101. Cambridge University Library. |
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Hilger Micrometer Projection Device, undated [c.1939], GBR/0180/RGO 101/2/26, Drawer 2 PC 2: RGO 101. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/1563622 Accessed May 08, 2025. |