After completing this exercise, you should be able to:
 measure linear dimensions of objects
 measure weight using both an analytical balance and a toploading balance
 conduct weighing by difference
 distinguish intrinsic and other errors
 determine and report appropriate measures of accuracy & precision for repeated measured quantities
 apply our "rule of thumb" to devices with linear scales
 account for the propagation of errors in computations from uncertain quantities
 determine and report units and dimensions of measured and computed quantities
 recognize and use significant figures as an indication of the intrinsic precision of laboratory
devices
 determine the average density of an object
 transfer a precise volume of liquid using a pipet
 measure precise delivered liquid volumes using a buret
 transfer liquids quantitatively using a pipet
