Connect the meter for a resistance measurement. Insert the red probe's plug into the Volt/Ohms jack and the black probe's plug into the common (ground) jack. Set the range switch on the ohmmeter to Ohms. Place the red probe on one side of the resistor and the black probe on the other. Note the value on the display. The reading is the resistance of the value of the resistor.
Connect a circuit that contains a battery and resistor. Connect the positive terminal of the power supply to the left lead of a 100,000 ohm resistor. Next connect the right lead of the resistor to the red probe of the first multimeter. Connect the red probe's plug into the microampere / milliampere jack of the first multimeter, then connect the common jack of the multimeter to the power supply's ground terminal. For the second multimeter, insert the red probe's plug into the multimeter's Volt/Ohm jack, then insert the black probe's plug of the second multimeter into the second multimeter's common jack. Connect the red probe of the second multimeter to one end of the resistor and the black probe to the other end. Set the second multimeter's range to volts.
Turn on the power supply and record the measurements. Turn up the power supply to 10 volts. Note the second multimeter's voltage reading across the resistor. It should read 10 volts, the same as the power supply. Note the current reading through the 100,000 ohm resistor, the reading on the first multimeter. It should read 0.01 milliamperes or 10 microamperes. The units of the reading will depend on how your multimeter displays currents. Remember that one ampere equals 1,000 milliamperes and one ampere also equals one million microamperes. Also remember that one milliampere equals 1,000 microamperes, and 0.01 milliamperes equals 10 microamperes, since 10 divided by 1000 equals 0.01.
Calculate the resistance with the voltage and current readings. Divide the voltage reading on the second multimeter by the current reading on the first multimeter. The division should result in a value near 100,000. Remember that a resistor has a tolerance specification. A 100,000 ohm resistor could have an actual value anywhere between 95,000 and 105,000 ohms.