It came early and I love it for my pearl businessI'm not a professional jeweler but I sometimes have to measure the size of gems for my clients. This is simple to use and directions are provided.The print could be larger.I bought this for my father who uses it on a daily basis since he is a professional jeweler. He’s used it for a few months now and not a single problem. The readings are accurate and the build quality is fantastic. He said he likes it drastically better than the expensive ones he has owned. Definitely worth the buy for anyone in the field!Great presentation and it functions perfectly.Works, but if you pull the measuring portion too far (past about 24mm) the measurements go crazy. Better made units I have used do not have this happen. Not typically used for measurements above 10-15mm, but still a defect in the product.Hard to use if your left handed,also the device is quite smallPurchased it because the jeweler in town had one. Excellent.This product seems great