Tolerance design is a systematic approach to determining acceptable variation in product specifications while balancing quality, cost, and performance. This guide provides a step-by-step methodology for implementing tolerance design, complete with practical examples and real-world data demonstrating how proper tolerance management reduces costs while improving product quality.

The Five Focusing Steps provide a systematic approach to identifying and eliminating constraints that limit organizational performance. This comprehensive guide demonstrates how to apply each step with practical examples, showing how businesses can achieve significant improvements in throughput, efficiency, and profitability through this proven methodology.