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Read the screwgaug shown bellow Main sca...

Read the screwgaug shown bellow Main scale has `(1)/(2)mm` marks In complete rotation the screw advances by (1)/(2)mm` Circular scale has 50 division .

Text Solution

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Object thickness `= 6.5 mm + 14 ((1//2mm)/(50))`
Object thickness `= 4.5mm + 39 ((1//2mm)/(50))`
`=4.89mm`
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