Calculated Industries introduces its Scale Master Pro and Scale Master Pro XE models. The units make it easy for contractors to get linear, area and volume takeoffs from blueprints, plans, maps and out-of-scale drawings. Their new ergonomic design, slip resistant grips and easy-to-read dual displays make them easier to use for both right- and left-handed users.The Scale Master Pro XE has 91 built-in scales and 10 custom scales that support Imperial and Metric units. An optional PC cable instantly sends values directly to PC spreadsheets or estimating programs. The Scale Master Pro has 72 built-in scales and six custom scales.