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
