139978 Two full turns of the circular scale of a screw gauge cover a distance of \(1 \mathrm{~mm}\) on its main scale. The total number of divisions on the circular scale is \(\mathbf{5 0}\). Further, it is found that the screw gauge has a zero error of \(-0.03 \mathrm{~mm}\). While measuring the diameter of a thin wire, a student notes the main scale reading of \(3 \mathrm{~mm}\) and the number of circular scale divisions in line with the main scale as 3.5 . The diameter of the wire is
139978 Two full turns of the circular scale of a screw gauge cover a distance of \(1 \mathrm{~mm}\) on its main scale. The total number of divisions on the circular scale is \(\mathbf{5 0}\). Further, it is found that the screw gauge has a zero error of \(-0.03 \mathrm{~mm}\). While measuring the diameter of a thin wire, a student notes the main scale reading of \(3 \mathrm{~mm}\) and the number of circular scale divisions in line with the main scale as 3.5 . The diameter of the wire is
139978 Two full turns of the circular scale of a screw gauge cover a distance of \(1 \mathrm{~mm}\) on its main scale. The total number of divisions on the circular scale is \(\mathbf{5 0}\). Further, it is found that the screw gauge has a zero error of \(-0.03 \mathrm{~mm}\). While measuring the diameter of a thin wire, a student notes the main scale reading of \(3 \mathrm{~mm}\) and the number of circular scale divisions in line with the main scale as 3.5 . The diameter of the wire is
139978 Two full turns of the circular scale of a screw gauge cover a distance of \(1 \mathrm{~mm}\) on its main scale. The total number of divisions on the circular scale is \(\mathbf{5 0}\). Further, it is found that the screw gauge has a zero error of \(-0.03 \mathrm{~mm}\). While measuring the diameter of a thin wire, a student notes the main scale reading of \(3 \mathrm{~mm}\) and the number of circular scale divisions in line with the main scale as 3.5 . The diameter of the wire is
139978 Two full turns of the circular scale of a screw gauge cover a distance of \(1 \mathrm{~mm}\) on its main scale. The total number of divisions on the circular scale is \(\mathbf{5 0}\). Further, it is found that the screw gauge has a zero error of \(-0.03 \mathrm{~mm}\). While measuring the diameter of a thin wire, a student notes the main scale reading of \(3 \mathrm{~mm}\) and the number of circular scale divisions in line with the main scale as 3.5 . The diameter of the wire is