The Starrett Micrometer 1" No 436 is a precision tool for measuring very small distances, typically in microns. As a renowned brand in the metalworking industry, Starrett is known for producing high-quality micrometers that provide accurate and reliable measurements. This specific model, with a measuring range of 1 inch, is designed for precise measurements in various industrial and manufacturing applications where accuracy is crucial. It is a valuable tool for ensuring quality control and consistency in metalworking processes. In very good shape , works smoothly. In case but, case looks rough but is very functional.