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6. This tool has opposable jaws operated by a messenger travelling down a cable to release a spring catch and that is used in fish pond cultivation for sampling the bottom of a body water

7. this instrument is designed for testing the construction of salt water and brine in the pond

8. tools with a characteristically shaped cutting edge of blade on its end, for craving or cutting a hard material such a wood, stone, or metal by hand, struck with a mallet or a mechanical power



pleaseee answer thisss​


Sagot :

Answer:

6. ECKMAN DREDGE

7. HYDROMETER

8. CHISEL

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