Insulation resistance testers can be used to determine the integrity of windings or cables in motors,transformers,switchgear,and electrical installations.The test method is determined by the type of equipment being tested and the reason for testing.
http://www.informationstore.net/fluke/efulfillment.asp?publication=10307-eng
If you need a rough check on the value of a resistors the ohms ranges of your analogue multimeter will provide it, so long as the resistance value is between 10 ohms and one or two megohms, but the non-linear scales reduce the accuracy of the higher readings.
http://members.tripod.com/~baec/DEC90/ohmmeter.htm
From the AC impedance triangle, the input or output impedance of a two terminal network can be determined by measuring the small signal AC currents and voltages. For the input, the voltage is measured across the input terminals and the current measured by inserting the meter in series with the signal generator.
http://www.mitedu.freeserve.co.uk/Theory/inzoz.htm
This is an inexpensive way to make a stepped resistance box using a Single Pole - Twelve Position rotary switch and eleven resistors of equal value. As there are eleven resistance steps for each rotary switch instead of the usual ten there is one step of overlap between switches.
http://home.cogeco.ca/~rpaisley4/11StepBox.html