Hi Sean, not trying to be a party pooper or anything, but I'm thinking the anvil that David has will not be any good for your M&W one. The one David has is similar to a 0-2" Starrett one that I have, whereby it fits onto a fixed anvil micrometer.

Your M&W 940 is the same style as my 0-4" Starrett one that I have, whereby the anvils are interchangeable.

As you can see in the next photo, the anvil for my 0-2" one will not fit onto my 0-4" one, not only that, but it is calibrated from the fixed anvil surface of my 0-2 one, to give the correct distance to read 0-1".

Regards Nick.
Edited By Nicholas Farr on 28/05/2017 18:35:22