Question

What is the name of the instrument that was used to measure the rate of growth of a plant ?​

Answer 1

Answer:

Crescograph

A crescograph is a device for measuring the growth in plants. It was invented in the early 20th century by Sir Jagadish Chandra Bose. The Bose crescograph uses a series of clockwork gears and a smoked glass plate to record the movement of the tip of a plant (or its roots).