For first time visitors I recommend this archive for some of my best posts.
1675. 5-3/4" tall, submitted by a visitor:
1676. 10-1/2" long:
1677. 11" long:
As seen in this patent drawing, there are ridges on the inside:
1678. 6-1/2" long:
1680. Approximately 17' long, take a look at Neatorama for more guesses on this item:
To submit photos, send them to the address in my profile.
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.