Ashlar-Vellum

Ashlar-Vellum, a dba of Ashlar Incorporated, is a developer of Computer-aided design (CAD) and 3D modeling software for both the Macintosh and Microsoft Windows platforms. Ashlar-Vellum’s interface, designed in 1988 by Dr. Martin Newell and Dan Fitzpatrick, featured an automated Drafting Assistant that found useful points in the geometry and allowed the artist to quickly connect to locations like the “midpoint” or “tangent”.