This is a workbench that came out of a coffin builder's shop up in eastern Pennsylvania.
I didn't get good dimensions but the bench is long..at least 10 foot, and least 3 foot deep.

The bench is currently in a gunmaker's shop which is why all the barrels are lying on it and the
stock jig is in the vice.

At the back corner of the bench you can see a different kind of stock clamp.   These show up in a
variety of trades, mostly for chair making, but I have seen them labeled as axe handle vices as well.
 Also you can see sliding board jack and the tail vice.

This picture shows the angled left legs (the right legs are mounted vertically).  This is a
common trait of workbenches found in eastern and central PA.  My guess is that it's of German
origin, but that hasn't been proved conclusively other than the fact that it's found primarily
in the PA Dutch (Deutsch) region.  Also, note the tusk tenons holding the stretchers to the legs.
 Not a common feature on these kind of benches.  The vice clamps right to the faceboard.

I wish that this was a little lighter but, this is a view of the bench top.  If you look carefully
between the two dog holes in the center of the picture, you can see a dovertail key (the infamous
Dutchman ??), also one above the dog hole as well.  The face board was attached to the top by means
of these keys being inserted between the dog holes.  Also note at the lower section that the top
isn't a solid piece of wood.   (There is that piece running across the bench width.  I couldn't really tell
how it was built, and while the guy at the museum let me take pictures, crawling around
under it might have been a no-no.)