This is a nice used Japanese made Mitutoyo micrometer in it’s original case.......It marked 1-2” .0001” and 6601041 on the other side..................I don’t know anything about these things, but it seems to be in good clean condition.........With that said, I DON’T CLAIM IT TO BE PERFECT OR COMPLETE BECAUSE I DON’T KNOW..................BE SURE TO REVIEW MY PICTURES AND JUDGE FOR YOURSELF BEFORE MAKING PURCHASE.......OTHERWISE NOTE THAT THIS IS AN AS IS SALE WITH NO RETURNS.