Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great Product for Navigators!

These are a good set of dividers! Every navigator should definately have a pair! They are sturdy and the friction knob works perfectly, keeping your distance travelled without pinching. The distance versus velocity is great too! The needles on this thing are sharp and accurate. Not as good as the pointers of the product from 10 years ago, the needles on those set were flat and far superior. Dont get me wrong, these are still good, just not as good as 10 years ago. If you can get your hands on those, I would recommend, but these will work nearly as good.- C-130E/H Navigator!