Gentlemen: Many thanks for your very helpful site describing the method of reading the Vernier caliper. I recently purchased a Starrett Vernier caliper on Ebay which is in excellent condition and although I thought I knew how to "read" the instrument I was not certain. Your site was a great help in assisting me to confirm what I already thought was the correct method. Many thanks to you and Mary Ball for the clear and concise instructions. Sincerely, Taylor Mullaly