1729. 12" long", take a look at Neatorama for more guesses on this one:
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1730. 6" long, submitted by a visitor who is looking for information on this device:
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1731. The large round part is approximately 36" diameter:
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1732. 12" long:
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Close-up #1
Close-up #2
1733. 6-1/4" long, sent in by a visitor:
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1734. The handle is 11-1/4" long:
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Answers
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Last week's set is seen below, click here to view the entire post.
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Black Ops Pro Tips
More discussion and comments on these photos can be found at the newsgroup rec.puzzles.