Autolite copper core spark plugs use a copper-glass seal that bonds the insulator and terminal post center electrode together.
Overproduction or overstocking leads to increased inventory and money sitting idle. Inventory means any goods that are being held for any length of time, inside or outside the factory. In the Lean system, inventory is regarded as a symptom of a sick factory.
An inventory control template (Table 1) is an example of how to catalogue the office. Once a routine is established and the correct amount is decided upon, a monthly assessment of products on hand can be easily determined.