NON PRACTICE BOMBS
© Jerry Penry


This site shows a few of the objects that have been misidentified as practice bombs. These have been found on the eBay internet auction site by sellers who think they have either a WWI or WWII practice bomb.


CURRENT METER WEIGHT

This object, also known as a Sounding Weight, is a solid brass weight that is used with a Current Meter by agencies such as the U. S. Geological Survey. Older supply catalogs also list them as being made of lead. It does resemble a bomb or torpedo to anyone unfamiliar with this object due to the conical nose and the fins on the tail. The shape of this weight allows it to point upstream when lowered into a stream or river. The diagram shows how the weight was attached to the bottom of the current meter. They probably came in various shapes and sizes.




From a Gurley Hydraulic Engineering Instrument supply catalog dated 1918.






The link below shows new sounding weights for sale through Forestry Suppliers, Inc.
New Sounding Weight

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BATHEMETRY CONDUCTOGRAPH

Similar to the Current Meter Weight, but more sophisticated in its use. Usually made of solid brass. The one shown is approximately 40" tall and 4" diameter.








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MARKER BUOY

This object is a marker buoy that was used during WWII to mark the location of downed aircraft in bodies of water. The main portion is made of wood with a weighted tip and metal fins. When an aircraft was either shot down or had to make an emergency landing in water, another aircraft involved in the rescue dropped this device to mark the location for boat rescue teams. I would assume that there was some sort of smoke signal device in the fins that marked the location of the buoy.











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MORTAR SHELLS

Mortar shells are often mistaken for the smaller practice bombs since they are similar in appearance.






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