A **railroad switch**, **turnout** or *[set of]* **points** is a mechanical installation enabling railway trains to be guided from one track to another, such as at a railway junction or where a spur or siding branches off.

The switch consists of the pair of linked tapering rails, known as *points* (*switch rails* or *point blades*), lying between the diverging outer rails (the *stock rails*). These points can be moved laterally into one of two positions to direct a train coming from the narrow end toward the straight path or the diverging path. A train moving from the narrow end toward the point blades (i.e. it will be directed to one of the two paths depending on the position of the points) is said to be executing a *facing-point movement*.

**Technical drawing**, also known as **drafting** or **draughting**, is the act and discipline of composing plans that visually communicate how something functions or has to be constructed. Drafting is the visual language of industry and engineering. A *drafter*, *draftsperson*, or *draughtsman* is a person who makes a drawing (technical or otherwise). A professional drafter who makes technical drawings is sometimes called a *drafting technician*.

People who communicate with technical drawings, (those who design and those who are tradespeople), may use technical standards that define practical symbols, perspectives, units of measurement, notation systems, visual styles, or layout conventions. These enable a drafter to communicate more concisely by using a commonly understood convention. Together, such conventions constitute a visual language, and help to ensure that the drawing is unambiguous and relatively easy to understand.

- How far is the 3 point line in the NBA and NCAA?
- What are Points that lie on the same line?
- What is a point, line, part of a line, or plane that divides a segment into to congruent segments?
- When given two points on a coordinate plane how do you find the slope of the line? What is the formula?
- How do you write an equation in standard form when given two points which the line passes through?
- Can you write an equation in slope intercept form for a line that passes through the given points (-3,-6) (-8,-9)?
- How do you find the y-intercept of a line when you are given the coordinates of 2 points?
- How do you find an equation of a line that passes through points (2,-6)?

- Physics Lecture Demonstrations, - Lock Haven University ...Take the time to show it from different angles if necessary, so no ... An 8.5 x 11 inch piece of paper will do. Place ... With a point or very fine line source you ...
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