Wedge by simon quick from uk

Being an ergonomic solution, decisions were made primarily on this basis alongside a relatively standard language of handle details. A 25mm cylinder rounded at one end to provide a natural place for the thumb, slashed at the other, with a generous radius to fit neatly into the palm. Compound angles are used on the front face with the effect of creating a slightly distorted triangular form towards the end. Tangents are kept symmetrical so as to provide uniformity on conversion to a window handle. A constant 1.5mm radius is used throughout, expect along the back edges, where they steadily increase to 5mm for added comfort to the finger grip. This radius also joins the cylinder to the lever. A 50mm diameter rose, with a 10mm thickness and a 1.5mm radius mirrors the lever handle. Cast in brass, with the standard galvanic treatment cycle, this handle would be available in a standard range of finishes.