2D CAD

SteamCAD is an open source 2D CAD SteamCAD is a software available for Linux and MS Windows platform. It is designed especially for drawing steam locomotives as the one shown in the next image.
class 6 kkStB

Use the software to create precise drawings at any given scale. It supports both metric and imperial unit systems, as demonstrated on the next image.
SR class S15

You can download the source code, manual and Windows binaries at GitHub.

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