![](https://coimages.sciencemuseumgroup.org.uk/715/medium_thumbnail_1993_0675__0002_.jpg)
Solar microscope (dated 1770) signed B.MARTIN INVT ET FECIT LONDINI NO 34
- Made:
- 1770
![Solar microscope (dated 1770) signed B](https://coimages.sciencemuseumgroup.org.uk/319/551/medium_smg00069863.jpg)
Solar microscope (dated 1770) signed B.MARTIN INVT ET FECIT LONDINI NO 34, with large broadsheet on the "Description and Use... (framed); with 8 magnifiers mounted in 4 slides, etc. Numerous mss. lists; mahogany case