Alvin + ArtSnacks Drafting Pencil – The Poor Penman
Amazon.com : ALVIN DM357C Draft-Matic Mechanical Pencil, 3 Pack, Stainless Steel Drawing and Design Tools, Great for Drafting, Architecture, Engineering, and Art - Includes 0.3mm, 0.5mm, and 0.7mm : Alvin Draft Matic
Amazon.com : ALVIN DM07 Draft/Matic® Mechanical Pencil, 0.7mm, Stainless Steel Drawing and Design Tool for Students and Professionals, Great for Drafting, Architecture, Engineering, and Art : Alvin Draftmatic : Office Products