Home Improvement Questions? Ask a Handyman for Answers
Any decent multimeter like a Fluke 87 will measure frequency. See if you can borrow one but be carefull if you are poking probes into receptacles. You are dealing with electricity after all.
If you can't borrow one, I assume you don't want to spend $400 so if you are trying to measure the frequency of your house power, spend $20 on a 'Kill A Watt' plug in power analyser.
It's not a professional device by any stretch of the imagination but it will give you a Hz reading when you plug it into a receptacle. They are made by a company called P3 International and you should be able to pick one up on eBay for under $25 shipped. I did!
Not really. You need a meter that measures frequency. There is no way to derive frequency from Volts, Amps or Ohms or any combination thereof. They are all independant of frequency in this instance.
BTW, the frequency of an electrical supply is determined by the windings and rotational speed of the generators at the utility. I'm interested why you think that you may NOT have 60Hz (I assume you are in the US).