The 5-day course covers every aspect of intervention: structured family intervention, executive-style intervention, workplace intervention, invitational-style / process intervention and other variations.
Pencil sharpener. A pencil sharpener (also referred to in Ireland as a parer or topper) is a device for sharpening a pencil's writing point by shaving away its worn surface. Pencil sharpeners may be operated manually or by an electric motor.
History of the Pencil Sharpener. At first, penknives were used to sharpen pencils. They got their name from the fact that they were first used to shape feather quills used as early pens. In 1828, Bernard Lassimone, a French mathematician applied for a patent (French patent #2444) on an invention to sharpen pencils.