Apothecaries' system between actual and nominal weight. In the 19th century, most European countries or cities still had at least a "commercial" or "civil" system (such as the English avoirdupois system) for general trading, and a second system (such as the troy system) for precious metals such as gold and silver. The system for precious metals was usually divided in a different way from the commercial system, often using special units such as the carat. More significantly, it was often based on different weight standards. The apothecaries' system often used the same ounces as the precious metals system, although even then the
Nippon Screw Weight System conventional SPT test and triaxial compression test. The NARO has released the cost index table. Features for detecting weak spots: Features for conducting in-situ shear test and sampling at a different hole: Features for conducting Stability Analysis: 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