Interval Scales 4. Some can also be used to find solutions to highly complex equations. A micrometerr is used to measure the diameter of the given specimen only. In the last class, we had discussed Angular Measurements and Linear Instruments in a detailed way. types of Measuring Instruments and their Uses in a detailed way. Surface Measuring Instruments. 5) Do calculations: Some measuring instruments can also carry out a number of calculations like addition, subtraction, multiplication, division, etc. The various types of tools used in the Fitting Workshop are as follows. Sometimes these instrument show some readings even though there is no applied measurable parameter. Nowadays, the digital instruments are becoming very popular, which indicate the values directly in numerical form and even in decimals thus making them easy to read and more accurate. Nominal or Classificatory Scales 2. Below is the list of measuring instruments used in electrical and electronic work. The method used ought to be provable. -. The classification of measuring instruments according to their accuracy is to be effected by drawing up classes characterizing different levels of accuracy for instruments of the same category. In quantitative research, you have to consider the reliability and validity of your methods and measurements.. Validity tells you how accurately a method measures something. Instrumental – They are inherent in measuring instruments, because of their mechanical structure (e.g. This is the complete explanation of types of Measuring Instruments and their Uses in a detailed way. 1.2.1. There are many other functions performed by the instruments as indicated below: 1) Indicating the value of the physical quantity: The instruments are calibrated against the standard values of the physical quantities. In this blog we often discuss one form of metrology, but there are actually three major types of metrology used in today’s world. These Try squares come in various sizes from 75mm-300mm. There are basically three types of systematic errors, namely – a. Engineering Drawing Instruments and Their Usage [PDF], In this paper, I am going to familiarize you with the Engineering Drawing Instrument. There are also digital instruments for measurement of the blood pressure, heart beat rate, and others. The ability of the instrument to measure the accurate value is known as accuracy. They can give the readings in one or more decimal places. Gross errors are caused by mistake in using instruments or meters, calculating measurement and recording data results. There are also some disadvantages of the digital instruments. Instrumental Errors Similarly, the thermostat starts or stops the compressor of the refrigeration system depending on the temperature achieved in the evaporator. The movement of the pointer directly indicates the magnitude of the quantity, which can be whole numbers or also fractions. Copyright © 2020 Bright Hub PM. For measuring temperature we use different methods and devices. Types of Angular Measuring Instruments: There are various types of Angular Measurements which are based on various standards, and those are the following:…, Fitting Workshop Tools: Holding, Measuring, Marking, Cutting, Finishing, Striking & Power Tools [PDF], Fitting is the process of assembling various parts manufactured in the machine shop. 2. This is used for marking parallel lines from a finished edge and also for locating the center. The analogue instruments indicate the magnitude of the quantity in the form of the pointer movement. Name Purpose Ammeter (Ampermeter) Measures current Capacitance meter: Measures the capacitance of a component Current clamp: Measures current without physical connection Curve tracer: In case of high humidity and corrosive atmosphere the internal parts may get damaged and indicate the faulty values. Vernier Callipers is used to measure the dimensions of the given specimen like diameter(Outer Dia and Inner dia), length and depth etc. Working with absolute instruments for routine work is time consuming since every time a measurement is made, it takes a lot of time to compute the magnitude of quantity under measurement. The surface plate is made up of Cast Iron(C.I.) The instruments kept in unsafe locations like high temperature can be connected by wires and their output can be taken at some distant places which are safe for the human beings. Linear Measuring Instruments. Pressure is typically measured in units of force per unit of surface area.Many techniques have been developed for the measurement of pressure and vacuum.Instruments used to measure and display pressure in an integral unit are called pressure meters or pressure gauges or vacuum gauges. There are different types of measurement instruments that can be used by researchers for their studies; it depends on the nature of research that is to be carried out. People in ancient times used the different parts of their bodies to size things up. There are different types of measurement instruments that can be used by researchers for their studies; it depends on the nature of research that is to be carried out. Gauge – Reference to atmospheric pressure. Try to step back in time and imagine a world without measurement tools. Required fields are marked *, Engineering Drawing Instruments and Their Usage [PDF] In this paper, I am going to familiarize you with the Engineering Drawing Instrument. It is more precise than the marking table. The instruments indicate the value of these quantities, based on which we get some understanding and also take appropriate actions and decisions. Measuring instruments, measurement instruments, test equipment, measuring tools, measurement, hand held equipment like thermometers, tachometers... At the moment we provide about 500 different types and models of high quality measuring instruments to do tests and analysis of various physical, electrical, chemical and other parameters. ADVERTISEMENTS: This article throws light upon the four main types of scales used for measurement. The surface plate is used in conjunction with accessories such as a. Divider is used for marking circles, arcs, laying out perpendicular lines, bisecting lines, etc. These instruments are keep in safe place and maintaining the clean and dry places. The Surface plate is used for testing the flatness of a w/p.It is also used for Precision inspection, marking out layout and tooling setup. In this write up, we shall discuss various measurement instruments that can be used alongside with studies that are suitable for them. There are two main types of the measuring instruments: analogue and digital. 2) Measuring instruments used as the controllers: There are number of instruments that can be used as the controllers. Taper Measuring Instruments. Ratio Scales. You can find digital instruments in the cars, air planes, motor cycles, and also in places like air ports, railway stations, public places etc. For instance, when a certain value of the pressure is reached, the measuring instrument breaks the electrical circuit, which stops the running of compressor. Metrology, while often confused with the science of measuring weather (meteorology), is a very widely used field. Ordinal or Ranking Scales 3. Classification of Measuring Instruments The instrument used for measuring the physical and electrical quantities is known as the measuring instrument. The various types of tools used in the Fitting Workshop are as follows. Measuring Instruments Ranges. 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