Mechanical Pencil Month – Day 1: Borrowdale Plumbago
Object number one is not actually a pencil at all, mechanical or otherwise, yet without it the history of drawing would have turned out very differently. Said to have been…
Mechanical Pencil Month
While digging around in the Repertory of Arts for Brunel patents, I came across a familiar design from the early 19th century. Granted to civil engineer John Isaac Hawkins (inventor…