| Shelfmark: | Musée des arts et métiers-CNAM |
|
| Type: | instrument | |
| Dimension: | W.: 2,7; L.: 5,5; Mass: 10 g. | |
| Thematic group: |
Instruments
|
| Type: | fragment |
| Abstract: | An oval-shaped lens, concave, from spectacles (?) |
| Discipline | Topic | Argument | ||
| Optics | Apparatus | lenses | ||