{"id":10192,"date":"2022-11-24T10:00:19","date_gmt":"2022-11-24T04:30:19","guid":{"rendered":"https:\/\/www.aplustopper.com\/?p=10192"},"modified":"2022-11-25T16:45:28","modified_gmt":"2022-11-25T11:15:28","slug":"what-are-the-measuring-instruments","status":"publish","type":"post","link":"https:\/\/www.aplustopper.com\/what-are-the-measuring-instruments\/","title":{"rendered":"What are the Measuring Instruments?"},"content":{"rendered":"

Some Common Measuring Instruments<\/h2>\n

 <\/p>\n

    \n
  1. The measuring tape<\/strong> is used to measure lengths of several meters. Measurements are accurate up to 0.01 m. It is suitable for measuring the distance jumped by a long jumper, the distance of the throw of a javelin and the height of a jump by a high jumper.
    \n\"What<\/li>\n
  2. The meter rule<\/strong> is used to measure lengths of a few centimeters to a meter. Measurements are accurate up to 0.1 cm. It can be used to measure the length of a pencil, the width of a book and the height of a school bag.
    \n\"What<\/li>\n
  3. The vernier callipers<\/strong> is used to measure lengths of less than 10 cm. Measurements are accurate up to 0.01 cm. It can be used to measure the external and internal diameters of round objects like pipes and cylindrical containers. It can also measure the thickness of a book, a piece of glass pane and even the width of a crack.
    \n\"What<\/li>\n
  4. The micrometer screw gauge<\/strong> is used for very small readings. Measurements are accurate up to 0.01 mm. It can be used to measure the thickness of a cardboard, a coin or a key and the diameter of a piece of wire.
    \n\"What<\/li>\n<\/ol>\n

    Reading the Vernier Callipers<\/strong><\/h3>\n

    Example 1.<\/strong> Figure shows a pair of vernier callipers being used to measure the diameter of a metal pipe.
    \n\"WhatSolution:<\/strong>
    \nReading on main scale = 2.1 cm
    \nReading on the vernier scale = 0.07 cm
    \nTherefore, the diameter of the metal pipe = 2.1 + 0.07
    \n= 2.17 cm<\/p>\n

    Example 2.<\/strong> A boy uses a pair of vernier callipers to measure the width of a handphone as shown in Figure.
    \n\"WhatWhat is the reading of the vernier callipers?
    \nSolution:<\/strong>
    \nReading on main scale = 4.0 cm
    \nReading on the vernier scale = 0.04 cm
    \nTherefore, the width of the handphone = 4.0 + 0.04 = 4.04 cm<\/p>\n

    Zero Errors in Vernier Callipers<\/strong><\/h3>\n

    \"WhatAbove Figure shows three possible situations when using a pair of vernier callipers, that is,
    \n(a) no zero error,
    \n(b) positive zero error,
    \n(c) negative zero error.
    \nHence,
    \nCorrect reading = Reading obtained – Zero error
    \n\"What<\/p>\n

    Example 3.<\/strong> Figure shows a pair of vernier callipers with zero error being used to measure the thickness of a book.
    \n\"WhatWhat is the thickness of the book?
    \nSolution:<\/strong>
    \nZero error = +0.03 cm
    \nReading with zero error = 1.99 cm
    \nTherefore, the thickness of the book
    \n= 1.99 – 0.03
    \n= 1.96 cm<\/p>\n

    Example 4.<\/strong> Figure shows a pair of vernier callipers with zero error being used to measure the width of a remote control.
    \n\"What
    \n\"WhatWhat is the width of the remote control?
    \nSolution:<\/strong>
    \nNegative zero error is involved. Hence, the reading cannot be made directly.
    \nZero error = -(0.63 – 0.6)
    \n= -0.03 cm
    \n\"What
    \nReading with zero error = 5.26 cm
    \nTherefore, the width of the remote control = 5.26 – (-0.03)
    \n= 5.29 cm<\/p>\n

    Example 5.<\/strong> The diagram shows the position of a vernier scale at the main scale of a vernier calipers. What is the value of s?
    \n\"WhatSolution:<\/strong>
    \nThe reading of the measurement is 5.16 cm.
    \nHence s = 0.16 cm.<\/p>\n

    Reading the Micrometer Screw Gauge<\/strong><\/h3>\n

    Example 6. Figure shows a micrometer screw gauge being used to measure the thickness of a coin.
    \n\"WhatWhat is the thickness of the coin?
    \nSolution:<\/strong>
    \nReading on the main scale = 2.50 mm
    \nReading on the thimble scale = 0.27 mm
    \nThickness of the coin = (2.50 + 0.27) mm
    \n= 2.77 mm<\/p>\n

    Example 7.<\/strong> Figure shows the scale of a micrometer screw gauge.
    \n\"WhatWhat is the reading of the micrometer?
    \nSolution:<\/strong>
    \nReading on the main scale = 5.50 mm
    \nReading on the thimble scale = 0.33 mm
    \nTherefore, the reading of the micrometer = 5.50 + 0.33
    \n= 5.83 mm<\/p>\n

    Zero Errors in Micrometer Screw Gauge<\/strong><\/h3>\n

    There are two possible types of zero errors in using the micrometer screw gauge, that is the positive zero error and the negative zero error.
    \n\"What<\/p>\n

    Example 8.<\/strong> Figure (a) shows the zero error of a micrometer screw gauge and Figure (b) shows its subsequent reading of a measurement.
    \n\"WhatWhat is the actual value of the measurement?
    \nSolution:<\/strong>
    \nZero error = +0.01 mm Reading = 4.29 mm
    \nActual value of measurement = 4.29 – 0.01
    \n= 4.28 mm<\/p>\n

    Example 9.<\/strong> Figure (a) shows the zero error of a micrometer screw gauge and Figure (b) shows its subsequent reading of a measurement.
    \n\"WhatWhat is the actual value of the measurement?
    \nSolution:<\/strong>
    \nZero error = -0.01 mm
    \nReading = 6.30 mm
    \nActual value of measurement = 6.30 – (-0.01)
    \n= 6.31 mm<\/p>\n","protected":false},"excerpt":{"rendered":"

    Some Common Measuring Instruments   The measuring tape is used to measure lengths of several meters. Measurements are accurate up to 0.01 m. It is suitable for measuring the distance jumped by a long jumper, the distance of the throw of a javelin and the height of a jump by a high jumper. The meter […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[404],"tags":[3649,3648,3654,3653,3651,3650,3655,3652],"yoast_head":"\nWhat are the Measuring Instruments? - A Plus Topper<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.aplustopper.com\/what-are-the-measuring-instruments\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are the Measuring Instruments?\" \/>\n<meta property=\"og:description\" content=\"Some Common Measuring Instruments   The measuring tape is used to measure lengths of several meters. Measurements are accurate up to 0.01 m. It is suitable for measuring the distance jumped by a long jumper, the distance of the throw of a javelin and the height of a jump by a high jumper. 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