Measurement of length

The students should measure length, diameter, and hole depth of various objects with a measuring tape and/or vernier caliper as possible. In doing this they should choose and use the more suitable measuring device. The results should be entered in the table as a numerical value and its unit. The symbol for the length  (l )  and the diameter  (d )  should also be used. The average value  (AV )  of each set of 3 measurements should be determined.