This Tutor will help you with the principles of measurement. To get
started, click the "New Problem" button, select a measuring device and
click "OK". Once you have selected your measuring device, you may
enter measurements you have taken and get feedback from the Tutor.
Simply type your measurement in the box and click "OK".
The "Ask a Question" menu will provide detailed questions the Tutor
can answer for you about your measurement. At any time, you can ask a
question by selecting a question from the menu and clicking
"Ask". Examining these questions and answers is a good way to explore
the concepts involved in taking scientific measurements.