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. The most common abbreviation for pennyweight is dwt; d, for the Roman denarius, was the abbreviation for penny before Decimalization of the British monetary system. Alternate abbreviations are pwt and PW.
The large oil companies own very few retail locations, although they do have branding agreements via local fuel distributors. Starbucks and McDonalds have a large number of locations. There is some difference between franchised locations, and corporate owned.
Combined, these chains account for 40.1 percent of the convenience industry's 149,220 stores, according to Nielsen TDLinx. In fact, just the top 10 alone represent nearly 24 percent of the industry total, with 35,292 stores. After 7-Eleven, Shell Oil Products US ranks No. 2 on the Top 100, with 4,950 locations.