Jun 13, 2016 - Steeltreelabs announces Scala Architectural and Engineering Scale 1.1 for iOS devices. The app provides a new way to measure printed drawings on the go and at your desk. It includes standard imperial architectural, metric architectural, and engineering scales in a handy app. Users can also create custom variable scales, in case their drawings aren't to a known scale. There is also a slider that does the measuring. Version 1.1 brings a number of improvements and bug fixes.