Though not as ubiquitous as the German brand’s mechanical chubby pencils, it’s a must-have for any technical draughtsmen thanks to the uber-thick 3.2mm lead. Despite its larger size ...

Still available, this classic pencil takes 2mm leads that can be sharpened to a fine point using the tool built into the cap, or by using the timeless Mars 502 Lead pointer tub. British stationery ...

Common mechanical pencils come in sizes to accommodate 0.5, 0.7, and 0.9 mm leads, but there are bigger and smaller ones available. Perhaps one of those really large drafting lead holders could be ...