What was the foundational division of labor unlocked by precision manufacturing under Whitney's system?

Answer

The separation between the design engineer and the assembly worker

Precision manufacturing forced a separation where the design engineer defined the perfect dimension via gauges, and the assembly worker simply monitored machines without needing specialized fitting skills.

What was the foundational division of labor unlocked by precision manufacturing under Whitney's system?
inventionProductionManufacturingideaWhitney