When I tried this product for the first time i was thoroughly impressed with how easy it was to use and how accurate it was in measuring angles. The aluminum construction feels strong and durable, making it a reliable tool for any woodworking project .The markings are clear and easy to read, making it a breeze to measure angles. The only downside is that it doesn`t come with a locking mechanism, so it can move unexpectedly when in use. Overall, a great investment for any industrial and scientific woodworking needs..