Does what it's supposed to and does it very well! The construction seems super strong. She's definitely well built. And coming from Boulder Tools I know I will have a high performance tire gauge for years to come. I always try to keep my tire pressure close to 32. This extends the life of my tires, keeps my car stable and helps me save fuel. I don't use Wawa gas so I only went to check my tire pressure. I recently bought an air pump to avoid those rides but found it never gave my tires the right pressure so I still had to go to Wawa. But not anymore, with this gauge I can now have my tires at 32 PSI every time. it is very, very accurate. I tested it in Wawa and the measurements were perfect! No more trips to the gas station just to check tire pressure.