Gestamp Automocion has been granted a patent for a spindle rod design for a spindle device. The rod includes a threaded portion and a coupling part made of metal or metal alloy, connected to the rod ...
From the "groma" with its right angles and plumb bobs used 3,000 years ago to modern-day grade rods, surveyors have been using some type of rod in their work. A new grading device claims to eliminate ...
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