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Describe the procedure to measure the diameter of a wire with the help of a screw gauge.
Name the instrument which can accurately measure the following
The internal diameter of the neck of a water bottle
A boy uses a vernier callipers to measure the thickness of his pencil. He measures it to be 1.4 mm. If the zero error of vernier callipers is +0.02 cm, what is the correct thickness of the pencil?
The main scale of vernier callipers has 10 divisions in a centimetre and 10 vernier scale divisions coincide with 9 main scale divisions. Calculate
- pitch
- L.C. of vernier callipers.
When does a vernier callipers has the positive error?
Which part of vernier callipers is used to measure the external diameter of a cylinder?
The circular scale of a screw gauge has 100 divisions. Its spindle moves forward by 2.5 mm when given five complete turns. Calculate
- pitch
- least count of the screw gauge
How will you find the Zero Error of Vernier Caliper? Explain.
