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2077. The base is 15" long:
These next two items were part of the set seen in the previous photos.
2078. 5" square:
The numbers range from 0 to 100:
2079. 6" diameter:
2080. 12" tall when fully extended, take a look at Neatorama for more guesses and a chance to win a T-shirt:
2081. Approximately 10" long:
2082. 10" long, from the 1700s, the large part is hollow as is the piece on the upper left which is also open on the end:
2077. A Bausch and Lomb carbon arc microscope projector:
2078. Probably an old potentiometer, a variable resistor for use in laboratory experiments:
2079. These are drives for chart recorders that were used in a lab, they are powered by a spring which is wound with the handle, the rod rotates when the drive is on, they could be used to record plant growth, breathing, early EKG, barometric pressure, etc.
At the top of this picture is a brake to stop the drive:
2080. A Japanese traveling candlestick, it's missing the part that would have caught the wax:
2081. A laboratory vacuum pump for a bell jar:
2082. A powder horn for holding black powder for old firearms:
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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.
Thursday, November 4, 2010
Posted by Rob H. at 4:00 AM
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2077 A spectroscope?ReplyDelete
2078 is probably a variable resistor — the resistance wire would be laid along the numbered scale using the small pegs at the corners — like the one in the Wheatstone bridge meter previously shown on this site.ReplyDelete
Milliken oil drop experiment apparatus.ReplyDelete
2077 : Milliken oil drop experiment apparatus.ReplyDelete
tredl2082 - could be a vacuum cleaner attachment for blinds or record cleaner.ReplyDelete
A pump for evacuating a bell jar?