The toolroom is a space where tools and jigs are made and repaired for use throughout a factory. In engineering and manufacturing, toolroom activity is everything related to tool-and-die facilities in contrast to production line activity.

However, the equipment found in the tool room can be used to make individually with considerable time the components that are made in series for watches . An artisanal workshop making small numbers of watches can resemble a tool room of a large manufacturing complex.