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MEASURING INSTRUMENT                                                                                       GO BACK

MICROMETER SCREW GAUGE

The main scale and the vernier scale readings are added together to form the main readings

Main scale = 7mm, vernier scale = 0.38mm  .The reading is 7.38mm

Main scale = 3mm, vernier scale = 0.09mmThe reading is 3.09mm

 

Micrometer screw gauge is used for certain measurement such as diameter of a wire, thickness of nylon and paper , diameter of small ball.

 

The acuracy of this instrument is 0.01mm = 0.001cm

 

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