Which of the following can’t be measured using a screw gauge?
Thickness of a glass slab
Diameter of metal wire
Inner diameter of a pipe
Diameter of a lead shot
The inner diameter of a pipe can’t be measured using a screw gauge. It can, however, be measured using a vernier callipers.
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?