Mahr Federal Inc., (www.mahr.com) has enhanced its Dimensionair product line with the new Universal Dimensionair, an adjustable magnification air comparator that combines the stability, accuracy and fast response of a differential air system with the ability to work both as a single master or dual-master air gaging system with built-in magnification and zeroing controls. By selecting the appropriate dial configuration, the company says the Universal Dimensionair can be adjusted for use with virtually any dual-master air tooling or span master.