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.
Though this was the first mechanical pencil sharpener, it wasn't much faster, nor less work, than just using a knife. About ten years later, in 1837, the British picked up on this sharpening fad.