For first time visitors I recommend this archive for some of my best posts.
1663. Both are about 3" long:
1664. Approximately 24" long:
1665. 6" long:
1666. A medium sized pocket knife, the idea is to describe the purpose of the blade seen below:
1667. 5-1/2" long, sent in by someone who found this in their backyard:
1668. This device was submitted by a visitor who would like to find out how it was used, it has two glass screens, one slides along a bar and the other is adjusted via a micrometer, the box is 20" long and looks like it was made in the 1950/60's, text on it reads Casella, London 769:
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.