Coiled Coil Inspector

Examine tungsten filament coils of electric light bulbs.

What does a Coiled Coil Inspector do?

Examines tungsten filament coils of electric light bulbs for concentricity and burrs by rolling coils under fingers on workbench, using tweezers to separate coils. Measures length of coils, using metric scale. Determines brittleness of coils by stretching occasional coil to breaking point. Places approved coils in labeled glass jars and sets aside rejected coils. Maintains record of material examined.