You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is What is this instrument used for? and explain in detail?
c. Measure lengthThe instrument shown in the picture is an 'Infantometer'. Infantometer is a horizontal rod with a ruler with 2 vertical boards on 2 ends (one fixed and other moveable), used to measure length of an infant.