This is my first pair of calipers. I haven't used them much but they work really well, especially for 3D printing. Before that I used a ruler, which is not so easy for CAD. I love the depth feature, which actually allows me to draw perfectly straight lines that are also accurate in length. The case is decent and made of hard plastic, abs I find. This case is perfect for me but depending on your preference you may need a different case. A nice bonus that I didn't mention or overlook is that I included 3 batteries so I didn't have to buy multiple batteries.