1651. Approximately 5" long, take a look at Neatorama for more guesses on this one:
1652. 2" long, submitted by visitor who is looking to find information on this piece:
Larger image
1653. 14" long:
Larger image
1654. 2-3/4" diameter:
A view of the inside:
Larger image
1655. 6-3/4" long, this set of unidentified instruments was found in Yugoslavia and was sent in by a visitor who would like to know how they were used:
The top four are labeled 32, 30, 23 and 19. Each of them has a small rotating geared wheel at the tip. The largest wheel is on the #30 instrument, the #23 is smaller, and the #19 is smaller that the #23. The top one, #32 is somewhere in-between, and is configured differently, looking somewhat like a pen. The tool at the bottom has a point on one end and a small ball on the other.
The increments are 1/16":
1656. Around 2" long:
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.