From Robert Shawhan:
GraphPad Pro - Release 3. GraphPad Pro is a touch based engineering drawing application specifically designed for contractors who need to make accurate dimensional drawings while in the field. Sketch a design and GraphPad will snap the lines into alignment and leave you with a discrete set of points to work with. Round corners and add drill holes with the exact radius. Add dimensions and translate lines to accurately capture precise measurements. Finish your design by adding pictures, symbols and text; then email it to clients and co-workers while still on-site.Release 3 adds significant improvements in both functionality and usability. Setting the scale is significantly more intuitive, displaying the calculated Snap Length and maximum drawing size so you can easily select the proper settings for your drawing. This release also supports in-App purchases, so libraries of forms, calculations and symbols can now be sold through the App Store. GraphPad Engineering drawing made easy!List of features:General Drawing features:Sketch with automatic line straightening and angle snapCreates continuous smooth curvesNew line starting end point automatically snaps to the gridAngle snap user settable (Off, 10,30,45 Degrees)UnitsSupports English inches, feet, yards and milesSupports Metric millimeters, centimeters, meters and kilometersSupports scale multiples of 1/100, 1/10, 1, 10, 100, 1000 of selected unitsScale slider allows easy scale from .5 - 10 times unitsDimensionsCreate a dimension on an object with one touchSupports line lengths, point to point, point to line and radius dimensionsDimensions automatically adjust when the scale is changedObjects of fixed dimensions automatically re-size when scale is changedFeatures only available in GraphPad ProCalculations:Calculate Areas of closed shapesCalculate total line lengths of selected linesImages:Import images from the Photo LibraryImport images from webpages, by copying them to the Photo LibraryRotate, scale and crop imagesSet images to allow resizing, proportional resizing, or fixed sizeSet images to allow or restrict rotationImages rotate to the user specified angle snapDisplay image dimensions for scaled imagesLibrary:Store an image or geometry in the user libraryStored images retain image properties on size, dimensions and rotationNote: Customers are encouraged to try the Freeware version of GraphPad Pro before purchasing to see if it meets their needs.