A vernier callipers is more accurate in measurement than a screw gauge.
Four screw gauges are to be calibrated to the standard thickness tst of a wire. Series of measurements were performed by each instrument to obtain a distribution of the measured values as shown. Which of the following statements is correct?
Which of the following measures a small length to a high accuracy : metre rule, vernier callipers, screw gauge ?
The scales - vernier callipers, metre scale and screw gauge has the least counts:
Consider a Vernier calipers in which each 1 cm on the main scale is divided into 8 equal divisions and a screw gauge with 100 divisions on its circular scale. In the Vernier callipers, 5 divisions of the Vernier scale coincide with 4 divisions on the main scale and in the screw gauge, one complete rotation of the circular scale moves it by two divisions on the linear scale. Then