1783. Approximately 10" long:
1784. The idea here is to describe the purpose of the box and the hollow metal piece:
1785. The top part is around 42" long:
Larger image
1786. 30" tall, submitted by a visitor who is looking to find what this cart was for:
1787. 15" long:
Larger image
1788. About 9" long, take a look at Neatorama for more guesses on this one and a chance to win a T-shirt:
Answers
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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.