Set 491

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2857. 10" long, take a look at Neatorama for more guesses and a chance to win one of their funny T-shirts:

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2858. Sent in by someone who is looking for the purpose of this item, his description of it:

The hollow brass tube is 8" long, and has 1.5" diameter internal threads on each end. There are bands of reflective tape around it (this is coal mine country so maybe it was used in dark places). Threaded into one end is a knurled plug with a knurled screw threaded into it. The knurled screw has an O-ring on the end. The other end has a concave plug threaded into it that has a small threaded hole in the center.

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2859.

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The next three items where sent in by people who are looking to identify them.


2860. 25" long:

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2861.

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2862.

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Answers:


2857. This is a Russian Soyuz 28 Navigation Unit, it was used to determine Latitude/Longitude, Landing Position, and Orbit Angle of Landing during flight.



Text on the three numeric readouts on the right say: "period, minutes", "orbits", and "angle of landing". The gauge on the top is for longitude, the one on the left side is for latitude, and the bottom dial says "shadow" on the right and presumably "light" on the left.

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2858. This is probably the housing for a sonde that would have contained various devices for testing physical conditions under water, at high altitude, or below the earth's surface:

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2859. This was marked "beer can opener" but several people have said that it's an oil can opener:

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2860. This tool is probably a clapboard slick, also called a clapboard chisel, used for splitting out clapboards:

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2861. This is a trailer hitch bumper clamp, patent number 2,814,506:





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2862. This is most likely an old electrotherapy device, text on the jar lid says "The Samson Battery", the small wire tool might have been for scraping the contacts to get a better connection:

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An update from last week, someone provided the answer on Saturday:

2852. This tool is part of a tile cutting machine:









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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.