Which if the following is expected to have the highest percent error?

Some pieces of laboratory glassware are designed to measure volume. The burets are really precise. The pipettes and the graduted cylinders are not as precise as a buret, but we can measure a determined volume with a certain precision.
Other pieces of laboratory glassware are designed to hold or contain liquids, but they are not designed to measure the volume of them. This is the case of a beaker.
Answer: the one that is expected to have the highest percent error is the beaker.