1-28 have less loading effect on circuits, a high-sensitivity meter will provide a more accurate voltage measurement. To determine the sensitivity of a meter movement, you need only to divide 1 by the amount of current needed to cause full-scale deflection of the meter movement. The manufacturer usually marks meter movements with the amount of current needed for full-scale deflection and the resistance of the meter. With these figures, you can calculate the sensitivity and the full-scale voltage reading full-scale current (full-scale current ´ resistance). )RU H[DPSOH  LI D PHWHU KDV D IXOO VFDOH FXUUHQW RI      A and a resistance of 960 W, the sensitivity could be calculated as: The full-scale voltage reading would be calculated as: Full-scale voltage reading = full-scale current ´ resistance )XOO VFDOH YROWDJH UHDGLQJ        $ ´ 960W Full-scale voltage reading = 48mV RANGES Table 1-1 shows the figures for most meter movements in use today. CURRENT TO DEFLECT FULL SCALE RESISTANCE SENSITIVITY VOLTAGE FULL SCALE   1mA             N     92/7              .1 V    $            N     92/7 .048 V     $          N     92/7 .029 V Table 1-1.—Meter Movement Characteristics Notice that the meter movements shown in table 1-1 will indicate .029 volts to .I volt at full scale, and the sensitivity ranges from 1000 ohms per volt to 200,000 ohms per volt. The higher sensitivity