For first time visitors I recommend this archive for some of my best posts.
1753. 17-1/2" long:
1754. 22" long:
1755. Submitted by a visitor, take a look at Neatorama for more guesses and a chance to win a prize for the correct answer:
1756. Sent in by a visitor who is looking to identify this tool:
1757. 8-1/2" square, this was marked as being used for a specific purpose:
1758. 36" long:
To submit photos, send them to the address in my profile.
Last week's set is seen below, click here to view the entire post.
Black Ops Pro Tips
More discussion and comments on these photos can be found at the newsgroup rec.puzzles.