"R.H." wrote:
Two sets of photos have been posted this week, the first one is new and the
second is a repost of unsolved objects. Some of the items in the unsolved
set may have been correctly answered previously but I wasn't able to verify
them so I've included them in this new post.
http://puzzlephotos.blogspot.com/
Rob
518 looks very much like a foundry worker's "floor rammer".
Tom