## A nomogram for computing a+jb/a+jd and a nomogram for computing a+jb/a+jd |

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### Common terms and phrases

1/2 inches long a+jb c+jd abac accuracy ascending logarithmic scale center axis center vertical scale circle that point complex ratio Conditions on signs consecutive signs corresponding point cycle diagonal guide lines diagonal line different sign Difference directed distance follow the diagonal horizontal guide lines horizontal line III a straight intersection follow intersects III intersects the center label that point left axis left vertical scale line or diagonal line or guide line or horizontal linear extensions linear scales lines are drawn mechanical impedance model nomogram nomogram and instructions Nomogram for Computing point cor point corresponding point X intersects projected line real or imaginary right are linear right axis right logarithmic scale right vertical scale scale and circle scales are aligned sects the center Sign of result slide rule straight line inter straight line intersects Summation Technical Notes three logarithmic scales variables vertical line vertical to points