1525. 10" long, patented in 1880:
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A view of the bottom:
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.
More discussion and comments on these photos can be found at the newsgroup rec.puzzles.