I OBSERVE in NATURE (vol. xix. p. 518) a description of what is stated to be a new form of water-level indicator which has lately been erected by the India-rubber, Gutta-percha, and Telegraph Works ...

Apple Watch hydration tracking app WaterMinder now arrived with a new 5.1 version. The latest update introduced some nice features for iOS users including a redesigned look and a water level indicator ...