How to Change the Measurement Units and Drawing Scale

The vector stencils library "Tools" contains 11 clipart images of hand tools and instruments for drawing illustrations.
"A tool is any physical item that can be used to achieve a goal, especially if the item is not consumed in the process. Informally the word is also used to describe a procedure or process with a specific purpose. Tool use by humans dates back millions of years, and other animals are also known to employ simple tools.
Tools that are used in particular fields or activities may have different designations such as "instrument", "utensil", "implement", "machine", or "apparatus". The set of tools needed to achieve a goal is "equipment". The knowledge of constructing, obtaining and using tools is technology." [Tool. Wikipedia]
The clip art example "Tools - Vector stencils library" was created in ConceptDraw PRO diagramming and vector drawing software using the Manufacturing and Maintenance solution from the Illustration area of ConceptDraw Solution Park.

"In physics, length contraction is the phenomenon of a decrease in length measured by the observer of an object which is traveling at any non-zero velocity relative to the observer. This contraction (more formally called Lorentz contraction or Lorentz-FitzGerald contraction after Hendrik Lorentz and George FitzGerald) is usually only noticeable at a substantial fraction of the speed of light. Length contraction is only in the direction parallel to the direction in which the observed body is travelling. This effect is negligible at everyday speeds, and can be ignored for all regular purposes. Only at greater speeds does it become relevant." [Length contraction. Wikipedia]
The educational infogram "Length contraction" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Education Infographics solition from the area "Business Infographics" in ConceptDraw Solution Park.

This astronomic diagram example was redesigned from the Wikimedia Commons file: Extragalactic distance ladder.JPG.
[commons.wikimedia.org/ wiki/ File:Extragalactic_ distance_ ladder.JPG]
Red boxes: Technique applicable to star-forming galaxies.
Green boxes: Technique applicable to Population II galaxies.
Cyan boxes: Geometric distance technique.
Pink box: The planetary nebula luminosity function technique is applicable to all populations of the Virgo Supercluster.
Solid lines: Well calibrated ladder step.
Dashed lines: Uncertain calibration ladder step.
"The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects. A real direct distance measurement of an astronomical object is possible only for those objects that are "close enough" (within about a thousand parsecs) to Earth. The techniques for determining distances to more distant objects are all based on various measured correlations between methods that work at close distances with methods that work at larger distances. Several methods rely on a standard candle, which is an astronomical object that has a known luminosity.
The ladder analogy arises because no one technique can measure distances at all ranges encountered in astronomy. Instead, one method can be used to measure nearby distances, a second can be used to measure nearby to intermediate distances, and so on. Each rung of the ladder provides information that can be used to determine the distances at the next higher rung." [Cosmic distance ladder. Wikipedia]
The astronomy diagram sample "Extragalactic distance ladder" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Astronomy solution from the Science and Education area of ConceptDraw Solution Park.

The vector stencils library "Trigonometric functions" contains 8 shapes of trigonometrical and inverse trigonometrical functions graphs: sine, cosine, tangent, arcsine, arccosine, arctangent, system axes.
Use these shapes to draw your geometrical diagrams and illustrations in the ConceptDraw PRO diagramming and vector drawing software extended with the Mathematics solution from the Science and Education area of ConceptDraw Solution Park.