# Abraham Ypelaar

> Dutch scientific instrument maker (1736–1811)

**Wikidata**: [Q65961066](https://www.wikidata.org/wiki/Q65961066)  
**Source**: https://4ort.xyz/entity/abraham-ypelaar


## References

1. [Source](http://waywiser.fas.harvard.edu/objects/1191/achromatic-compound-microscope?ctx=2d562d9d-f899-4050-ba44-6ab8d86f2422&idx=9)
2. [Source](http://www.dwc.knaw.nl/biografie/scientific-instrument-makers/?pagetype=authorDetail&aId=PE00004063)