TM  10-3930-643-34 GENERAL  MAINTENANCE  PROCEDURES. 2-13. Electrical  Repair. (e) Read the meter. If the meter switch is on the RX1 or X1 range, the reading is taken directly from the top scale. If  the  meter switch is on a different range, multiply the reading on the scale according to the table below. OHMS  SWITCH  SETTING SCALE X1 or RX1 Read number on scale X10 or RX10 Multiply reading by 10 X100 or RX100 Multiply  reading  by  100 X1K or RX1K Multiply  reading  by  1000 X10K or RX10K Multiply  reading  by  10,000 For example, the meters show the following readings: OHMS  SWITCH  SETTING READING X1 or RX1 40 ohms X10 or RX10 400 ohms (5) Using the DC volts scale. Setting up the meter. Before using the multimeter to measure DC voltage, do the following steps pertaining to the multimeter you have. Multimeter must be set to a voltage range higher than that being measured or multimeter could be damaged. NOTE Before  using  multimeter,   check the mechanical zero of the meter. If the meter pointer is not exactly over the zero line, reset by using the proper size screwdriver to adjust the small screw. (a)  AN/URM-105. Set meter switch to DC volts range. (To measure 24 volts DC, set switch on 100 DC volts range). 2-13