R.H. wrote:
Another set has just been posted:

http://puzzlephotos.blogspot.com/

575: electro-stim wand
576: I was thinking it was a decorative cover for the hole in a wood
stove, but I'm going with katana tsuba
577: toaster
578: Rockwell hardness meter (tests hardness of metal)
579: patch jag for the end of a cleaning rod (firearm barrel cleaning)
580: tongs for bending sheet glass?

--
Sandy