The Complete Handbook of Rulers

I bought this for our design studio because we use rulers every day and I wanted to understand what we were actually buying. Chapter 1 explained material differences I'd never even thought about—why our steel rulers stay straight but the plastic ones we got from the discount supplier warped after a year. The section on calibration standards was eye-opening. My only gripe is that the maintenance chapter felt a bit basic for experienced users, but overall this is practical stuff you actually need.

As an engineer working in precision instrument manufacturing, I found this handbook invaluable. It finally explains the full landscape of ruler grades, tolerances, and calibration standards in plain language rather than scattered across vendor catalogs. The chapter on specifications cleared up confusion about straightness tolerance versus marking accuracy that I'd been carrying for years. The business chapter alone—about suppliers and sourcing—saved me hours of research. If you work with rulers professionally, this is required reading.

Solid resource. I'm a model-builder and was frustrated when rulers I bought online weren't as straight as my old metal ones, and I had no way to know before buying. This book explains exactly why, and Chapter 2 on types and specifications is really clear about durability trade-offs. I do wish there were more on digital/app alternatives, since that's becoming common, but as a paper handbook on traditional rulers it's thorough and honest.

The opening chapter is excellent—really grounds you in what you're actually looking at when you pick up a ruler. But I felt like the book assumes you're buying rulers for professional work. For casual users or hobbyists just trying to find a decent ruler for their desk, some of the detail gets overwhelming. That said, if you do serious work with measuring tools, this book pays for itself in better purchasing decisions.

We sourced this for our construction crew and our procurement team. The supplier and business chapter (Chapter 6) is worth the price alone—it explains the actual landscape of bulk buying, calibration verification services, and when renting makes sense versus owning. The maintenance section helped us set up a proper care protocol so our steel rules stay accurate on job sites. Practical, specific, and written for people who actually use these tools.

Clear, thorough, and refreshingly free of marketing nonsense. I appreciate that the author explains material properties and trade-offs honestly—there's no pretense that expensive always means better. The FAQ section answered specific questions about recalibration and shelf life that I couldn't find anywhere else. My one note: the glossary could have been longer, but what's there is well-written and precise.