Rare Instruments, Maastricht

Violin Builder & Restorer

Smits Luthier

Violin maker & Restorer

Pronk Uurwerken, Zwolle

Restoration of watches and clocks

Restauratie atelier Museum Boerhaave, Leiden

Restorer of scientific instruments

Atelier Bockweg & Eekels, Vlijmen

Restoration of clocks

Blanksma Klokken, Arnhem

Restoration of clocks and watches

Clockrestorer, Schagen

Restoration of clocks

De Klokkenmakers, Hilversum

Restoration of clocks and watches

Atelier de Tijdmeester in Amsterdam

Clocks and watches

Jongerius Restauraties

Restoration of actique clocks and  en barometers

Zeewolde

Antique clocks

Van Tijd Tot Tijd, Woerden

Restoration on clocks and watches

Peter Zwaanenburg, restaurator uurwerken, Dordrecht

Restoration of clocks and barometers, also antiquarian