MITCalc3D for SolidWorks 1.70 screenshot This multi-language calculation package includes solutions for gearing, belt, chain, springs, beam, shaft, and many others. MITCalc support 2D and 3D CAD systems, Imperial and Metric units and many international standards (ANSI, ISO, DIN….). Download MITCalc3D for SolidWorks 1.70