One of the main gauges of architectural space is a man. The proportions of his body serve specific module, significantly affecting the size of a work of architecture, its elements and in general on all subjects.
Robert Shamilevich, author of the blog Art Architecture, provides the following free Detail Component packages for download. Each link is a RAR file with multiple Detail Component families inside. These Detail Components may assist you in presenting your drawings, and in giving them some sort of understandable scale:
People (скачать образец семейства*)
Trees (скачать образец семейства*)
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Art Architecture: Архитектурный рисунок в Autodesk Revit