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Signature	Maker	Instruments	Comments	Location	References
DONCKER, HENDRIK	Holland, 1626-99, MIM NIM	Cross-staff, 1698 = D.(1986).	also made protractors; hydrographer.	in de Nieuwbrugh Street, in't Stuurmans gereetschap, Amsterdam (1651-99).	Rooseboom 1; Tooley; Wynter 1; Mörzer Bruyns 2.
DONCKER, HENDRIK	Holland, 1626-99, MIM NIM	Cross-staff, 1698 = D.(1986).	also made protractors; hydrographer.	in de Nieuwbrugh Street, in't Stuurmans gereetschap, Amsterdam (1651-99).	Rooseboom 1; Tooley; Wynter 1; Mörzer Bruyns 2.

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