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The vernier caliper permits measuring with greater accuracy and precision than a ruler. The use of the vernier caliper is illustrated at left measuring one side of a square. The object ot be measured is placed in the jaws of the caliper.

The value of the dimension being measured is indicated by the position of the zero mark on the sliding scale pointing to on the main scale. The units digit and first decimal place are read from the main scale. The value of the second decimal place is determined from the vernier. The value of the second decimal is given by whichever line on the vernier best lines up with a line on the main scale.

For the square above, the main scale reading is between the 0.8 and 0.9 lines. This is somewhat hard to see because some of the lines between 0 and 1 are obscured by the sliding jaw of the caliper. In such a case, I find it is easy to count backward from the nearest labeled line that can be clearly seen.

Now, look at the lines on the sliding scale. I think that the eighth line best lines up with a line on the upper scale. This means that the second decimal place is 0.08.

Thus, the proper value for the side of this square is 0.88 cm. What is its area?

The use of the vernier caliper is illustrated above measuring the length of a metal slug. The slug is placed lengthwise in the jaws of the caliper.

For the slug above, the main scale reading is between the 3.5 and 3.6 lines. This is somewhat hard to see because some of the lines between 3.0 and 3.5 are obscured by the sliding jaw of the caliper. In such a case, I again find it easiest to count backward from the nearest labeled line that can be clearly seen.

Now, look at the lines on the sliding scale. I think that the second line best lines up with a line on the upper scale. The value of the first line is zero and the second line is 0.01. This means that the second decimal place is 0.01.

Thus, the proper value for the length of this slug is 3.51cm. What is its diameter?

The use of the vernier caliper is illustrated at left measuring the diameterof a metal slug. The slug is placed in the jaws of the caliper.

For the slug above, the main scale reading is between the 0.4 and 0.5 lines. This is somewhat hard to see because some of the lines between zero and 1 are obscured by the sliding jaw of the caliper. In such a case, I find it easiest to count backward from the nearest labeled line that can be clearly seen.

Now, look at the lines on the sliding scale. I think that the sixth line best lines up with a line on the upper scale. The value of the first line is zero and the sixth line is 0.05. This means that the second decimal place is 0.05.

Thus, the proper value for the diameter of this slug is 0.45 cm. What is its volume?

The value of the dimension being measured is indicated by the position of the zero mark on the sliding scale pointing to on the main scale. The units digit and first decimal place are read from the main scale. The value of the second decimal place is determined from the vernier. The value of the second decimal is given by whichever line on the vernier best lines up with a line on the main scale.

For the square above, the main scale reading is between the 0.8 and 0.9 lines. This is somewhat hard to see because some of the lines between 0 and 1 are obscured by the sliding jaw of the caliper. In such a case, I find it is easy to count backward from the nearest labeled line that can be clearly seen.

Now, look at the lines on the sliding scale. I think that the eighth line best lines up with a line on the upper scale. This means that the second decimal place is 0.08.

Thus, the proper value for the side of this square is 0.88 cm. What is its area?

The use of the vernier caliper is illustrated above measuring the length of a metal slug. The slug is placed lengthwise in the jaws of the caliper.

For the slug above, the main scale reading is between the 3.5 and 3.6 lines. This is somewhat hard to see because some of the lines between 3.0 and 3.5 are obscured by the sliding jaw of the caliper. In such a case, I again find it easiest to count backward from the nearest labeled line that can be clearly seen.

Now, look at the lines on the sliding scale. I think that the second line best lines up with a line on the upper scale. The value of the first line is zero and the second line is 0.01. This means that the second decimal place is 0.01.

Thus, the proper value for the length of this slug is 3.51cm. What is its diameter?

The use of the vernier caliper is illustrated at left measuring the diameterof a metal slug. The slug is placed in the jaws of the caliper.

For the slug above, the main scale reading is between the 0.4 and 0.5 lines. This is somewhat hard to see because some of the lines between zero and 1 are obscured by the sliding jaw of the caliper. In such a case, I find it easiest to count backward from the nearest labeled line that can be clearly seen.

Now, look at the lines on the sliding scale. I think that the sixth line best lines up with a line on the upper scale. The value of the first line is zero and the sixth line is 0.05. This means that the second decimal place is 0.05.

Thus, the proper value for the diameter of this slug is 0.45 cm. What is its volume?