diff --git a/tools/meas.py b/tools/meas.py
index 7172576..8a94daa 100644
--- a/tools/meas.py
+++ b/tools/meas.py
@@ -8,6 +8,7 @@ import serial
 import copy
 import binascii
 import matplotlib.pyplot as plt
+import math
 
 ###############################################################################
 
@@ -488,7 +489,7 @@ if __name__ == "__main__":
           meas_r = []
           meas_p = []
 
-          i = ((drive_str + 1) * 2) / 1000
+          i = ((drive_str + 1) * 2.0) / 1000.0
 
           if args.output_file != None or args.show_graph == True:
             for m in meas_data:
@@ -503,12 +504,12 @@ if __name__ == "__main__":
                 meas_ratio.append(1)
 
               # R = meas_data[0] * 5V / 1023 * I
-              r = (m[1] * 5 / 1023) / i
+              r = (m[1] * 5.0 / 1023.0) / i
               meas_r.append(r)
 
               # P = meas_data[0] * 5V ^ 2 / r
               if r > 0:
-                meas_p.append(i**2 * r)
+                meas_p.append(math.pow(i, 2) * r)
               else:
                 meas_p.append(0)
 
@@ -519,8 +520,8 @@ if __name__ == "__main__":
             plt.plot(meas_freq, meas_ratio)
             plt.plot(meas_freq, meas_r)
             plt.plot(meas_freq, meas_p)
+            print meas_r
 
-            print meas_ratio
             print "Please close the mathplot window to exit..."
             plt.show()