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CAD Closure by Gateway Software Productions

CAD Closure allows you to generate geometric closures from the dimension text (not line properties) in your CAD drawing. Works seamlessly with AutoCAD but is not required as CAD Closure has a built-in viewer. The closure graphic is developed in real-time as you select the text. CAD Closure will compute area and check curves to see if they are tangential. Curves are cross checked between chord, radius and length. Multiple reports formats available

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AHatch Pro by Fell & Kernbach GmbH

In many fields (eg. Civil Engeneering (USCS, DIN 4023, ...), Architecture, Geosciences, Cartography, ...) complex hatch patterns are needed for a clear graphical representation. AHatch Pro is a flexible tool for the design of AutoCAD hatch patterns. The generated hatch patterns can be used with the AutoCAD "hatch" and "bhatch" commands. AHatch Pro is developed as a stand-alone program and may be used independently of Autodesk AutoCAD.

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