| Shelfmark: | Musée des arts et métiers-CNAM |
|
| Type: | instrument | |
| Dimension: | H.: 1; W.: 3; L.: 5; Diam.: 1; Mass: 30 g. | |
| Thematic group: |
Instruments
|
| Type: | apparatus |
| Abstract: | Brass ring with ivory peg and press stud in spring. On the back of the handle is inscribed 'Wilkies' |