Armadillo Gear - Scale Master retro
The Scale Master® Classic is designed for building, engineering and construction professionals. Get fast, accurate linear, area and volume take-offs from blueprints, drawings and maps. It features 72 built-in scales (39 U.S. and 33 metric) for maximum versatility in architectural and engineering scaling. 6 custom scales, 3 each for U.S. and metric units, let you roll or define any scale, even from plans that have been reduced, enlarged or are out-of-scale.With the Scale Master Classic you can reduce take-off time and speed estimates, reduce errors and improve profits.For contractors, estimators, engineers, architects and draftspersons - anyone needing fast, accurate takeoffs from plans and blueprints.Comes with the Blue case. No users manual, but there are plenty of videos on the internet to show how to use it.