Rosiwal 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 and led to the development of the stereograph. Measures in an absolute scale the hardness of minerals expressed as abrasion's resistance, measured at laboratory, starting
121 George Street, The Rocks and has been continuously occupied for commercial and retail purposes since construction in 1880. The building's scale 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 building is 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 building at 121 George street is expressive of the close weaving of