Experiment 1 Rulers vs Calipers In this experiment you will compare the precision and accuracy measuring the same objects with a ruler and a caliper Materials 1 Marble Ruler String 1 8 oz Styrofoam Cup Vernier Caliper 1 Washer Procedure 1 Using the ruler measure the diameter of the marble Record your measurement in Table 1 2 Indicate your uncertainty Record the uncertainty in Table 1 3 Repeat Steps 1 and 2 for the outer diameter of the washer inner diameter of the washer washer thickness length of the string and the height of the Styrofoam cup 4 Repeat Steps 1 3 using a Vernier caliper Table 1 Ruler and Caliper Measurements Ruler Object Measurement cm Uncertainty cm Caliper Measurement cm Marble Diameter Washer Outer Diameter Washer Inner Diameter Washer Thickness String Length 2014 eScience Labs LLC All Rights Reserved Uncertainty cm Styrofoam Cup Height Post Lab Questions 1 Compare the measurements for objects using the ruler and caliper and write a general statement on when it is more beneficial to use a ruler rather than a caliper 2 Comment on accuracy vs precision for rulers and calipers 3 What are the sources of uncertainty when using a ruler and caliper 2014 eScience Labs LLC All Rights Reserved
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