This measuring tool is a great ADDITION to my industrial and scientific toolbox. Through trial and error, I found that the Fatmax blade length is perfect for measuring various dimensions accurately and efficiently. The solid build of the product gives it durability and reliability. The easy-to-read numbers on the blade and the locking mechanism work seamlessly to read and secure the measurement.The only con I can think of is the weight of the tool, which can be a little heavy for extended use. Overall, I highly recommend this product for professionals in industrial and scientific fields..