Gleason Plastic Gears uses the AQL standard for batch size and sampling interval for our in-process inspection. The use of AQL and CPK guidelines assures us that "statistically" we have compliant parts. This is an industry standard for all Top Tier suppliers. Where Gleason Plastic Gears leads its competition is in the use of what we like to call Pro-Active SPC. Pro-Active SPC assumes that if the process variables stay constant the quality of the parts produced stay constant. Each process variable is characterized to give tolerances of acceptable variation. This variance is automatically monitored and recorded for every cycle producing a part. The part is either characterized as being "good" or "suspect". Only the "good" parts are automatically collected. Pro-Active SPC is a way of inspecting parts 100% of the time at no additional cost to the customer.