This site often has DVM's on sale for $3.99 (normally $9.99). They are moe than adequate for trouble shooting house hold electrical problems and automotive problems. They can handle most electronic problems where circuit loading is not an issue. They are very good for trouble shooting PC power supply problems.
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=30756
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=30756
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