This is a very nice, clean, micrometer head with .001 inch graduations. It is marked "BROWN & SHARPE MFG. CO. PROVIDENCE R.I. U.S.A.". As you can see in the pictures, this micrometer is very clean, and there is no rust, or past owner's names on it. This micrometer head is simple in design, fits into a .375" diameter hole in the machine or gauge where it is required. It has the .001" graduation scale, 0-1" capacity. A nice used micrometer head, still in really nice shape!