Imperial and Metric linear measurement calculator. Good for carpenters, builders, framers, engineers, machinists. Calculations in feet and inches, or just inches rounded to the nearest fraction (1/2 to 1/64 inch). Foot, inch, fraction optimized user interface. Converts and does calculations in "decimal pointed" meters, centimeters, millimeters, inches and feet. Operations to square up and center. Support for large screens and landscape mode. More info at http://timlick.com/caca-help4/help.html