They have all been answered correctly this week, though I'm not sure about
#518:



515. Map odometer

516. Back view of a traffic light

517. Utili-key multi-tool

518. This implement was marked "Reaming Iron", which are usually shaped more
like a blunt chisel and are used to open the seams between two planks of a
ship when applying caulking material. Maybe this one was used to tamp the
caulking.

519. Bottle opener ring

520. Lobster gauge

A couple new photos and links have been posted on the answer page:

http://pzphotosan92k.blogspot.com/


Rob