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2317. Around 20" tall, take a look at Neatorama for more guesses and a chance to win a T-shirt:
2318. Approximately 6" diameter:
2319. 18" long:
2320. This was sent in a visitor who is looking to find the exact purpose for this pump, by pumping the center part it can shoot liquid a couple feet into the air, liquid that falls into the small bowl on top will flow back into the container.
2321. 2" long:
2322. 7" long:
2317. A portable hand pump fog horn for use on a boat:
2318. A 360 degree folding arm protractor, these were mainly used for plotting theodolite readings, it's marked Adie, London:
2319. A square hole saw, by drilling a single hole in a piece of wood it could be used to cut a square or rectangular hole:
2320. A solvent dispenser for some type of fast evaporating or flammable cleaning fluid, a cloth could be pushed against the top part to moisten it, for use by a watchmaker, printer, etc. Liquid can flow back into the container only when the top part is pushed down but not when it's in the up position. This device looks like a smaller version of the plunger can that was posted here a couple of years ago, seen in the second photo below.
2321. A friction fuse for a Civil War cannon, the top half of the tube contained powdered chemicals similar to those on the striking surface of a match, the other half contained black powder. A cord was attached to the loop, when it was sharply pulled, the friction compound would ignite the black powder which would shoot a flame into the cannon causing it to fire. Depending on the location of the fuse hole, soldiers had to be careful where they stood since the friction fuse could become a projectile when the cannon was shot.
2322. A woodworker's gauge for scribing a line into a piece of wood, the top part is adjustable so it can be used for either straight or curved pieces, patent number 660,176.
To submit photos, send them to the address in my profile, please include dimensions, any text on the item, and where it was found.
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.