The "story" behind is largely one of a digital evolution designed to solve a critical engineering headache: calculating pressure loss across complex air distribution systems. The Visionary Behind the Tool

: Includes pictorial outlines and detailed data for a wide range of fittings, such as elbows, tees, and transitions.

The interface is still… let’s call it “engineer-friendly.” Searching for a “90-degree mitered elbow with turning vanes” still feels like a treasure hunt. A web-based REST API or Python library would be a dream. But hey, maybe in version 70001.

Even with the latest database, engineers make mistakes. Avoid these.