No grade for this. However you should keep a pencil and paper nearby to record topics that you will need help with. Plan to ask those questions between now and the exam.

1. Read the caliper. Numbers are in cm.

   
   
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2. Read the caliper. Numbers are in cm.

   
   
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3. Read the caliper. Numbers are in cm.

   
   
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4. Record the value for the length on this ruler to the greatest number of significant digits permitted.

   
   
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5. How should the value from an analog measuring instrument be reported?

   1.   ?    Rounded to the nearest whole number.
   2.   ?    Rounded to the value associated with the nearest marking on the instrument.
   3.   ?    Estimated so that the last reported position reflects a "guess" as to the proportion of the distance covered between two markings. Often 1/10th of a scale division.
   4.   ?    Estimated so that the last reported position reflects a "guess" as to the proportion of the distance covered between two markings. Often 1/100th of a scale division.

6. How can we describe the last digit of a number recorded as the result of a physical measurement?

   1.   ?    The last certain value.
   2.   ?    The first uncertain value.
   3.   ?    The last uncertain value.
   4.   ?    Of absolutely certain value if correctly recorded.