1765. 7-1/2" long:

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1766. 11" long x 6" wide, submitted by a visitor who is looking to identify this piece of hardware:


1767. The bottle on the left is 15" tall, circa 1935:

1768. 7" long, from the 1800s, the idea here is to figure out how this device was used:

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1769. 16" long, patented in the 1890s, take a look at Neatorama for more guesses on this one:


1770. 15" long, the purpose of the hole in this tool is a clue for who would have used it:


Answers
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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.