# J.F.J. Bar

> Dutch scientific instrument maker (1824–1908)

**Wikidata**: [Q65940335](https://www.wikidata.org/wiki/Q65940335)  
**Source**: https://4ort.xyz/entity/j-f-j-bar


## References

1. [Source](https://zoeken.stadsarchiefdelft.nl/detail.php?id=36574776)
2. [Source](https://www.openarchieven.nl/ade:3548e930-4023-11e5-8d2d-6b3b32ae74b9)
3. [Source](https://www.openarchieven.nl/ade%3A6223bb40-4025-11e5-b9a4-27e96f8c6365)
4. [1828](https://n2t.net/ark:/33862/collect/530998)
5. [Source](http://www.dwc.knaw.nl/biografie/scientific-instrument-makers/?pagetype=authorDetail&aId=PE00010742)