I explain that this tape measure measures its purpose, that is, it measures the length of things. It is a durable auto-return metal with good construction. Overall a well made product. However, I originally bought it based on my own misunderstanding that it would also measure diameter in tenths. This misunderstanding reflects the fact that I didn't just pay attention to the product description and is in no way attributable to the manufacturer. I will use this ribbon for other purposes but unfortunately I can't use it for my work.