The Tetra TH 35 is a accurate liquid crystal Thermometer for aquariums. The Tetra TH 35 enables constant accurate measurement of the temperature in the aquarium. It is easy to read and will be attached to the outside of the aquarium glass.https://www.aquaristikshop.com/aquaristic/Tetra-Thermometer-TH-35/112621/
- Tom K. wrote about Tetra Thermometer TH 35 in 2016:
Easy to use. Small.