Imperial and US customary measurement systems the Troy units of weight—the troy ounce used to this day for weighting precious metals. Edward I (1272–1307) broke the link between a coin's value and its weight when he debased the English coinage by introducing a groat (four pence) which weighed of 89 grains rather than the expected 96 grains. The groat was further devalued in the 1350s when its weight was reduced to 72 grains. During Saxon times land was measured both in terms of its economic value and in terms of its size. The Domesday Book used the hide, an economic unit of measure. In other references
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