HMM Rule/One Pen
A smartly designed writing instrument that combines a pen with a straightedge and ruler. It has three interchangeable heads, including a ballpoint, a touchscreen stylus, and a lanyard loop. Made from sturdy milled aluminum. Available for a limited time from Massdrop.
When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases.
