Pennyweight Act of 1878; only the Troy ounce and its decimal subdivisions remained official. The Troy ounce enjoys a specific legal exemption from metrication in the UK. The pennyweight is the common weight used in the valuation and measurement of precious metals. Jewellers use the pennyweight in calculating the amount and cost of precious metals used in fabricating or casting jewellery. Similarly, dentists and dental labs still use the pennyweight as the measure of precious metals in dental crowns and inlays. Pennyweight and grains are still used to weigh gooseberries in competitions in Cheshire, northwest UK. Over the Pennines in Yorkshire
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