Using a Multimeter

Select the right range BEFORE connecting the meter to the circuit. If you have the meter connected in parallel (as a voltmeter) and you accidently switch to the current range then you will short circuit the supply and blow the fuse in the meter

Use the correct terminals - the high current terminal is only for measuring current > 200mA and must be used with the high current (10A) setting

If the meter doesn't work, check that the correct range is selected and that the correct terminals are being used
The multimeter contains a fuse, if it has been connected to a circuit incorrectly then the fuse may have blown

The numbers on the scale show the maximum value that the meter can read ... if the meter tries to read above this maximum value then an error symbol is displayed