POST #13: Sketch Number Eleven

I intend to add values to this sketch.  Once this has been done, I will add an updated image to this post.

I did not take a photograph of this drawing at the seventeen-minute point.  Here is the sketch as of now.

Here is a shot of the setup.  I simply placed the hammer on top of the drawing table.

UPDATE

Below is the finished sketch, followed by several details.