9. Combination Squares, Farmed Shrimp, Ball Valves, String Trimmers
Aired Apr 25, 201621 minTMDb
Steel rulers are marked and fitted with adjustable heads to produce combination squares used for measuring and layout work. Shrimp are bred and raised in managed ponds; machined valve bodies receive drilled spherical closures that regulate fluid flow; and engines, shafts, guards and rotating cutting heads are assembled into string trimmers.
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