What is the function and use of the ruler, and what is the function of the ruler?

1. A ruler is usually used to measure short distances or draw straight lines.

2. The ruler is widely used in mathematics, surveying, engineering and other disciplines, and has the function of accurately measuring the ruler gauge of the edge of the straight line.

3. The ruler is used for straightness measurement and flatness measurement by the light gap method, and can also be used together with the measuring block to inspect the length and size.

4. The ruler is commonly used to make rolling bearing steel.

The ruler, also known as the ruler, is a very commonly used instrument for measuring length, and this stationery is so common that almost every elementary school student has one, usually used to measure short distances or draw straight lines.

Able to measure lengths.

There are (length) units on the ruler;

The common ones are: meters, decimeters, centimeters, millimeters;

ruler, inch; Feet, inches.

Interpretation of the ruler [rod; straightedge]

A ruler used to draw straight lines.

Word decomposition Explanation of straight straight í not curved: straight line. Right angle.

Diameter. Stand erect. Cut to the chase.

Intuition (?.)Intuitive. Stretch out the curved one:

Straighten up. Impartiality and reasonableness: right and wrong.

Confidently. Upright. Integrity.

Refreshing, frank: straightforward. Straightforward (刬 ).

Straightforward. Be honest. Outspoken.

Interpretation of a ruler ǐ Chinese municipal unit of length (also known as "city ruler"). One foot is equal to ten inches. In the Western Han Dynasty, one foot was equal to.

meters, now three feet is equal to one meter of the hall Ling Branch): ruler (.A foot-long white silk, borrowed from a small canvas;

Epistles). The ruler is short and the inch is long. Ruler.

Measuring the length of the apparatus Wang lead: bamboo ruler. Something like a ruler :

Iron ruler. Imitation ruler.

A straightedge is a tool used to measure straight-line distances and is commonly used in drawing, construction, manufacturing, and various other industries. It was invented and used in different times and cultures, and its specific origin varies from time to time and from place to place. However, what is certain is that the ruler has an important place in human history and is one of the indispensable tools in modern society.

The earliest form of the ruler dates back to the ancient Egyptian period, when the ruler was a wooden tool known as the "ushatain" used to measure and cut imitation wood and other materials in the making of carpenters, shoemakers, and other handicrafts. In the ancient Greek and Roman eras, the ruler was widely used and became an important tool in architectural and engineering surveying. In China, the origin of the ruler can be traced back to the Warring States period and was also used as a measuring tool in the field of handicraft and construction.

The ruler is also used differently in Western and Eastern cultures. In the West, a straightedge is often used with a compass to form a complete measuring tool, while in the East, a simpler single ruler is often used.

With the development of the times, the ruler has gradually developed into a tool of different shapes and sizes. Modern rulers are usually made of steel, plastic, or other materials, come in a variety of lengths and widths, and are equipped with graduation marks such as scales and degrees. In addition to the traditional straight form, modern rulers can also be folded for easier storage and use.

Overall, the ruler is an invention of great significance in the history of mankind. It has become an indispensable tool in architecture, engineering, crafts and other fields, and has been updated and improved as technology has evolved. In the future, it is foreseeable that the straightedge will continue to play an important role as an indispensable tool in a variety of surveying and manufacturing work.

Ornamental effect. Measuring ruler, thick stem, dark green color, large flowers, white flowers, fragrant. It is a common home-keeping plant, which can be planted in pots or gardens, and can also be used as a fence plant. Very ornamental.

Medicinal effects. Flowers and stems measured in the feet of the day can be used in medicine. The flowers measured by the ruler can clear away heat and moisten the lungs, relieve cough, **hot cough, hemoptysis, cervical lymph node tuberculosis and other diseases.

It can be decocted in water or drunk in soup. The measuring rod has obvious curative effects on mumps, hernia, carbuncle poison, cerebral arteriosclerosis, and cardiovascular diseases, and can relax tendons and detoxify. Fresh stems can be peeled, pricked, mashed and used externally for fractures, mumps and sores.

Edible effect. The ruler will bear fruit, and the fruit will be eaten. The trade name is "dragon fruit".

Dragon fruit, whose real name is green dragon fruit, red dragon fruit. Dragon fruit is highly nutritious and has unique functions. It contains phytoalbumin and anthocyanins, rich in vitamins and water-soluble dietary fiber, which are rare in ordinary plants.

Dragon fruit has high nutritional value, has a certain health care function of relieving hunger and poison, can prevent diseases, and can also be used for winemaking, canned food, and jam. The flowers of the inchworm can be eaten as a vegetable. Flowers are picked in summer and autumn.

Flowers can be used fresh or steamed and dried. It is suitable for making soup, delicious and fragrant. It has the effect of clearing heat and moistening the lungs, dissolving phlegm and relieving cough, nourishing and nourishing the skin, and is an excellent nourishing soup.

Wedding sock return effect.

The measuring stick is often cut into life, so it can be used as a grafted rootstock for crab claw orchid and cactus, and can also be grafted with more than two plants of the same family in one column, which is of great value in floral art.

Ruler, I believe it is no stranger, and there are many types of rulers on the market, one of which is the level, as the name suggests, is a ruler that measures the horizontal position, is a measuring tool, and the value is indicated by the level bubble, let's take a look at what the level is.

1. Detect and adjust the horizontal position of machine tools, instrument rails, instrument bases and other mechanical equipment.

2. Measure the inclination angle of the relative horizontal plane position, such as the straightness and flatness of the machine tool, instrument rail, flat ruler and flat plate.

3. Measure the perpendicularity and parallelism of the two planes to help the building installation.

That's all for you about what a level does.