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1669. 12" long, take a look at Neatorama for more guesses on this tool:
1670. 18" tall:
1671. 11" long:
From Jack Devitt's collection
1672. 12-1/2" long with a 42" handle:
1673. A close-up of something common, also describe why the vertical piece can be slightly moved in relation to the horizontal part:
1674. The inside diameter is approximately 7":
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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.