While using a digital multimeter to diagnose electrical problems on customers’ equipment, I frequently hear the comment, “I’ve got one of those multimeter things, but I never learned how to use it.” ...

[Piffpaffpoltrie] had a problem. They found the InLine VA40R to be a perfectly usable multimeter, except for a couple of flaws. Most glaring among these were the tiny sockets for the test probes.

Q: I have a tenant who complained that a light fixture wouldn’t light. After I replaced the switch, the light still wouldn’t come on. I realized that all the bulbs were out. Anyway, is there a way to ...