1525. 10" long, patented in 1880:
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A view of the bottom:
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1526. 5" long, submitted by a visitor who would like to find the exact purpose of this knife:
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1527. 72" long, take a look at Neatorama for more guesses on this machine:
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Close-up
1528. 7-1/4" long, some unidentified hardware that was sent in by a visitor:
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1529. 3" long:
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1530. About 18" long:
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Answers
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.
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More discussion and comments on these photos can be found at the newsgroup rec.puzzles.