This kind of thermomerter is used to measure the water terperature in aquarium. Soft suction cup can be firmly stuck on the aquarium glass, which is helpful to observe the temperature. 1) Type: solid-stem enclosed scale 2) Nominal range: 0-40 篊 / 篎 3) Scale division: 1.0 篊 / 篎 4) Fillings: organic liquid 5) Total length: 150mm, 120mm