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2. Scale ruler - Wikipedia

   en.wikipedia.org/wiki/Scale_ruler

   An architect's scale is a specialized ruler designed to facilitate the drafting and measuring of architectural drawings, such as floor plans and Multi-view orthographic projections. Because the scale of such drawings is often smaller than life-size, an architect's scale features multiple units of length and proportional length increments. [1]

3. Orders of magnitude (length) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude_(length)

   Comparison of sizes of semiconductor manufacturing process nodes with some microscopic objects and visible light wavelengths. At this scale, the width of a human hair is about 10 times that of the image. [79] To help compare different orders of magnitude, this section lists lengths between 10 −7 and 10 −6 m (100 nm and 1 μm).

4. Technical drawing tool - Wikipedia

   en.wikipedia.org/wiki/Technical_drawing_tool

   An architect's scale. A scale ruler is a scaled, three-edged ruler which has six different scales marked to its sides. A typical combination for building details is 1:20, 1:50, 1:100, 1:25, 1:75 and 1:125. There are separate rulers for zoning work as well as for inch units. Today scale rulers are made of plastic, formerly they were made of ...

5. Ruler - Wikipedia

   en.wikipedia.org/wiki/Ruler

   A variety of rulers A carpenter's rule Retractable flexible rule or tape measure A closeup of a steel ruler A ruler in combination with a letter scale. A ruler, sometimes called a rule, scale or a line gauge or metre/meter stick, is an instrument used to make length measurements, whereby a length is read from a series of markings called "rules" along an edge of the device. [1]

6. International System of Units - Wikipedia

   en.wikipedia.org/wiki/International_System_of_Units

   The conversion between different SI units for one and the same physical quantity is always through a power of ten. This is why the SI (and metric systems more generally) are called decimal systems of measurement units. [10] The grouping formed by a prefix symbol attached to a unit symbol (e.g. ' km ', ' cm ') constitutes a new inseparable unit ...

7. Unit of length - Wikipedia

   en.wikipedia.org/wiki/Unit_of_length

   A ruler, depicting two customary units of length, the centimeter and the inch. A unit of length refers to any arbitrarily chosen and accepted reference standard for measurement of length. The most common units in modern use are the metric units, used in every country globally. In the United States the U.S. customary units are also in use.

8. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Metre-stick - Wikipedia

   en.wikipedia.org/wiki/Metre-stick

   Two wooden yardsticks with brass ends, in inches and division of yard for half, quarter, eighth and sixteenth A folding metre-stick carpenter's ruler with millimetre divisions and numbers in centimetres. Fully extended it measures 2 metres. In countries in which the metric system is used, the scale typically contains only a metric scale.