Pool Shop Residential Thermometer

One of two broke within a week. Cheaper product.

After less than a month, can't see any red mercury. Almost looks like it faded, other than a small area down at bottom of the tube.

I use it on my boat to tell me the water temp and it is great.

Already isn't working.

it works just fine for your pool

I've had two of these. I threw out the first cuz the liquid separated and I couldn't get it working again. The second was stored inside the house while not in use and the liquid froze or something cuz it now reads my pool as 0 Celsius. Will not buy again.

Shortly after purchasing, the black numbers and red line are impossible to read. Useless to me now. I recommend trying another brand.