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  1. LENGTH Hazrin Shah Bin HjAzahari 08B0912 Mohammad DedyardieTakong 08B0904

  2. LENGTH • Identify rules, meter rule, micrometer screw gauge, vernier calipers and measuring tape. • Use and describe how to use ruler, micrometers, vernier scales and calipers to determine length. • Specify correct units for shorter and longer lengths.

  3. LENGTH UNITS INSTRUMENTS

  4. Micrometre screw gauge Example : To find the thickness of a paper metre Centimetre Millimetre Kilometre Use to measure very small value Vernier calipers Example : To measure the internal length & external length Units commonly used Length Use to measure the internal and external diameter of object Instruments used Metre rule Measuring tape Vernier caliper Micrometre screw gauge Use to measure short length Use to measure longer length Measuring tape Example : Length of a door Ruler Example : Width of a book