Each time it will come across in a different format and different least count, but the basic way of reading will remain the same.Īfter reading this article we have become aware of the importance of a ruler, its type and how it is read. 2650 BCE and it was by the German Assyriologist Eckhard Unger while excavating at Nippur.Ī ruler is a tool that you will be encountering multiple times in your academic life. Which is the largest preserved ruler? Copper alloy rod is the oldest preserved ruler from c. It is also useful in bisecting the angle by using an unmarked ruler and compass. It is used in the ruler and compass construction, where an unmarked ruler and compass can be used for construction. It is also used to draw graphs and tables due to its straight edge. In geometry, a ruler without having any marks on them could be used for drawing only a straight line between two points. Many times they are also used in engineering, carpentry and the print fields. There are a total of 16 sub hashes between the marking of one inch on the ruler.Īfter going through what is the ruler? We understood that ruler in maths is used to measure a line and the straight edges, which allows them to be used for drawing, scoring, and cutting. The big long hash with numbers opposite to the centimetre is known as the inches. Ruler Measurements in Inches - Inch is bigger than the centimetre. They are functional in both mobiles and the computer and it is useful in the absence of a physical ruler. Screen Rulers - It is a type of ruler software programme, where you can have a digital scale on the screen by setting up the pixel. The contraction ruler is also known as the shrinkage or shrink ruler. As well as linear length measurement, for example, a person's leg.Ī Contraction Ruler - In this ruler there are larger divisions compared to the standard division, to allow the shrinkage of the metal casting. It is used by a tailor to measure the solid body length, for example, a person's body. The length of the tape is calibrated by inches and centimetres. For example, you can take a carpenter's ruler which is 2 m long and when it is folded, it's just 25 cm long, so that it can easily fit into the pocket.įlexible Length Measuring Length - This instrument does not need to be straight, it is used by tailors to measure the fabric. When they are extended to use, It is straight as a ruler. Measuring Instruments - This instrument is made similar to the ruler function and they are portable by folding or retracting into a coil as in metal tape measure. The basic unit of measurement in the basic line gauge includes inches, agate, picas, and points. Line Gauge - This ruler is used in the paint industry and is made from a variety of materials, typically metal or clear plastics. Short rulers are 15 centimetres which are very convenient to carry and long rulers are 30 centimetres or 12 inches long, it is useful to draw larger drawings. Sometimes a metal edge is embedded into a wooden desk ruler to preserve the edge when used for straight-line cutting.ĭepending on the size of the ruler there are two types of ruler - a short ruler and a long ruler. Material rulers are used at a mechanical workshop. Plastics are used to make rulers since they were invented as they could be moulded with length markings. Rulers are made from wooden, plastics and metal. There are different types of ruler depending on the material it is made of. The rulers are marked with standard distance in centimetres in the top and inches in the bottom and the intervals in the ruler are called hash marks. A math ruler is used to measure the length in both metric and customary units. Ruler Meaning in Maths - A ruler is a device or tool that is used in geometry and technical drawing, as well as engineering and construction technologies to measure the distance of a straight line. In this article, you will learn what is a ruler, its type, reading a ruler, and its uses. Are you someone who looks at a ruler but doesn't understand how to use it? or do you ever wonder why so many different types of rulers are used? Why can’t just one ruler of 15 cm be sufficient? Vedantu will answer all these questions below.
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