Once again they've all been answered correctly:





581. Old micrometer for automobile cylinders

582. Book darts

583. Castellated nut

584. Block knife or chopper, could be used for tobacco but is also for
other crops as well.

585. Load binder

586. Squirrel mixer



Numerous links and few new photos have been posted on the answer page:

http://puzphotosans103n.blogspot.com/



Rob