United States customary units mass: tower, apothecaries', troy, avoirdupois, and metric. Of these, the avoirdupois weight is the most common system used in the U.S., although Troy weight is still used to weigh precious metals. Apothecaries weight—once used by pharmacies—has been largely replaced by metric measurements. Tower weight fell out of use in England (due to legal prohibition in 1527) centuries ago, and was never used in the U.S. The imperial system, which is still used for some measures in the United Kingdom and other Commonwealth countries, is based on avoirdupois, with variations from U.S. customary units larger than a pound. The pound avoirdupois,
Nippon Screw Weight System Nippon Screw Weight System In the year of 2012 the announced an in-situ ground survey machine, the Nippon Screw Weight System (NSWS), designed to overcome problems with the standard penetration test; The NSWS was developed with the specific aim to encounter the recent weather abnormalities and natural hazard, saving human lives. The creator of NSWS, Kozo Okita, was the member of 311 earthquake disaster committee It is compact, weighs 120 kg, and highly-mobile because the wheels are attached, suited to measure the ground in the crowded residential areas. It costs about only half of what used to cost with the