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The figure shown below is a screwgauge. When the circular scale division matches the main scale at 43, the 6 . 5 m m mark on the main scale is just visible. The main scale has 1 2 mm marks. In complete rotation, the screw advances by 1 2 mm and circular scale has 50 divisions. The reading of the screwgauge is

Options

  1. A6 . 93 mm
  2. B5 . 93 mm
  3. C4 . 93 mm
  4. D7 . 93 mm

Correct answer

A. 6 . 93 mm

Step-by-step solution

Object thickness = 6.5 mm + 4 3 1 / 2 mm 5 0 = 6.93 mm

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