Received this to replace an old gauge I used to inflate tires. Where I live in the mountains the temperature changes quite often and quite often so I have to check it quite often. I love technical stuff and it suits me very well. Yes, it's simple and just measures the different pressures you put on it, but the backlit screen and the ability to change the measurements are really great. Before DST was changed it was difficult to do all this in the dark, this solved it for me.