Barometer is an instrument to measure atmospheric pressure, used especially in forecasting the weather and determining altitude.

The value of tulips during the Dutch Golden Age in the 17th century increased so much that people began using them as a currency themselves. There are records of entire homes being sold for not yet bloomed tulip bulbs.

A crescograph is a device for measuring the growth in plants. It was invented in the early 20th century by Sir Jagadish Chandra Bose.