A local artists' materials shop would offer a range of sketchbook styles (perforated, non-perforated, bright white, cream, and various sizes and weights of pape

A local artists' materials shop would offer a range of sketchbook styles (perforated, non-perforated, bright white, cream, and various sizes and weights of paper) and probably be glad of your business if you are the type who buys a whole carton of books at once! My old University still sells lab books with hard covers and alternate grid and lines. The grid is in green and there is a choice of 1mm/10mm or 2mm/10mm/20mm on the grid (UK). Because all the science undergrads use them the supply can be depended on. The engineering department in the University where I took my first degree always insisted on us making sketches with a machine pencil and no ruler on plain paper, especially during lectures. Their argument was that you needed to learn to express your ideas in visual form quickly. I wasn't very good at it but stuck with it and tend to prefer plain paper now. I trust we all back up our better pages with a phone camera or scanner?