AccuMark from Gerber Technology is an intelligent pattern design software system for the apparel and fashion industry. See how it simplifies and accelerates pattern design, grading and marker. CAD software is used by upholstery manufacturers to design new products, reduce the requirement for upholstered prototypes, prefect the templates for ease of sewing and upholstery and to nest the patterns to give minimise fabric use. Upholsterers traditionally.