Sightglass is a San Francisco-based coffee bar and roastery. Their coffee is freshly harvested in small quantities from around the world and the quality of the brew is scrutinized and perfected from working in small batches. "The sight glass is also the viewing window that exposes the complex and delicate process of coffee being roasted inside the drum." These qualities of precision and craft were emulated in the logo and identity system (designed with Boon Design). Check out their shop at 270 Seventh Street @ Folsom in San Francisco and visit there website.