Rosiwal scale with corundum with a base value of 1000. The Rosiwal scale is used in mineralogy in the same way as Mohs scale and Knoop scale. Rosiwal scale The Rosiwal scale is a hardness scale, with its name given in memory of the Austrian geologist August Karl Rosiwal. The Rosiwal scale bases its measure on absolute values, unlike the Mohs scale whose values are relative values, its interest is relegated to the amateur or an approach that makes it useful in the research field ('in situ'). The Rosiwal method (also called Delesse and Rosiwal) is basically a method of petrographic analysis
107-109 George Street, The Rocks Regency Style. The buildings have been continuously occupied for commercial retail purposes since construction in 1861. The building's scale, detailing and alignment to the street is typical of that found along the west side of George Street and lining the harbourside as part of the Business Precinct of The Rocks. The buildings are part of the rich fabric of The Rocks which is highly regarded by residents, Sydney people and visitors and acknowledged by the Australian Heritage Commission and the National Trust as part of The Rocks Urban Conservation Area. The potential archaeological resource on the site is representative of