Starrett 1-2 Outside micrometer with .0001 vernier graduations and friction thimble.
they are in like-new condition with original case and wrench. missing 1" standard.
I have tested for accuracy and function against a 1" gauge block. It reads 1.0000 and the anvil and spindle faces close against it properly.
There are 2 available, both are in the same condition.