determine the diameter of a given wire using a screw
Answers
Answer:
Find the value of one linear scale division (L.S.D).
Determine and record the pitch and least count of the screw gauge.
To find the zero error, bring the plane face B and A near. Repeat and record this for three times. Record zero error as nil if there is no error.
Move face B away from face A. using a ratchet head R, move the face A towards face B lengthwise and stop when R turns without moving the screw.
Linear scale reading (L.S.R) is recorded by noting down the no.of visible and uncovered divisions of linear scale.
Let n be the no.of divisions of the circular scale lying on the reference line.
To measure diameter in a perpendicular direction, repeat steps 5 and 6 by rotating the wire to 90°.
For the entire length of wire, repeat steps 4,5,6 and 7 for five different positions and record the observations.
Find the total reading and also zero correction.
Take the mean of different values of diameter.
Using a half-meter scale, measure the length of the wire. Repeat this step three times and record the readings.
Explanation:
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