As product types go, the washbasin is probably one of the most legible. Unless you happen to be in an übercool hotel or restaurant toilet, where it sometimes takes all the detection skills of a modern-day Sherlock Holmes to work out where and how to wash your hands, the washbasin communicates its functionality in a fairly clear way. Tap, receptacle, hole for the water to be lead away. If there’s one manufacturer, however, which in spite of the squarely utilitarian nature of the basin has managed…