I purchased this product for my wife because cooking times in our oven suddenly started to vary from expectations, and I began to believe the thermostat was the problem. First of all, the dial is very large and easy to read (for young eyes), but we find it's a good idea to eyeball the needle position for the desired temperature on the dial, then clip the thermometer onto a rack (it attaches and detaches easily), and preheat the oven. The angle of the dial vis-a-vis the clip swivels easily, and the thermometer is easily visible through the oven window, but you can't read the temperature (because of dingy oven glass), so that's where pre-heating eyeballing is handy. The clip attaches solidly and releases easily. The product has a nice "solid" feel, and is comfortable in the hand with the silicone grips being useful to keep from dropping in. I would keep it on top of the stove, rather than leaving it in the oven all the time, because that way you make sure the glass face is cleaned frequently. Once you have predetermined the reading you need, it is very easy to just glance at the needle and confirm the temperature is correct. The actual temperature readings are indistinct viewed through the oven door though.