Product review (4 stars): Very good with one problem
Works very well. It seems to be quite accurate and easy to read. However, it is difficult to hang on the wall. Screws are not supplied and you have to use a small #6 screw to fit. But the bigger problem is that it is designed with a concave curved back so it tends to rock on the wall. I solved the problem by putting some picture bumpers on the back, but a flat back would have been much, much better. I took off a star for that.