It is important for drawing scientific diagrams to be accurate and understandable. For example, this scientific drawing shows a plot of demand versus supply. The drawing must be accurate and drawn to scale to deduce measurements and quantities from the drawing. You can use EdrawMax to create well laid out, clear, readable and understandable diagrams that are functional as well. It uses simple drag and drop and other simple tools for easy use. It is also a perfect choice for creating scientific drawings of all types using its symbols library and template libraries as well.