Micrometer
| Instrument | Micrometer |
| Type | -- |
| Category | Astronomy |
| Date of construction | 1900 |
| Maker/Place of construction | P.Gautier, Paris |
| Instrument | Micrometer |
| Type | -- |
| Category | Astronomy |
| Date of construction | 1900 |
| Maker/Place of construction | P.Gautier, Paris |
