Identify and describe a part of your model that shows one thousandth. Explain how you know.

https://www.google.com/search?q=model+that+shows+one+thousandth&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjI6unO7eLXAhXJ4IMKHU1wD_4QsAQIMQ&biw=1920&bih=949