diff --git a/20240709SerdarModScript.py b/20240709SerdarModScript.py
index 4d53971..61f70dd 100644
--- a/20240709SerdarModScript.py
+++ b/20240709SerdarModScript.py
@@ -7,8 +7,8 @@ Lightfield + Positioner
 ############################################
 # Packages from Ryan
 import re
+from threading import Thread
 import pyvisa
-import threading
 # from pyvisa import ResourceManager, constants
 
 # B Field Limits (in T)
@@ -572,8 +572,11 @@ def sweep_b_val(instr:pyvisa.resources.Resource, min_bval:float, max_bval:float,
     wl = np.array(loaded_files.wavelength)
     np.savetxt("Wavelength.txt", wl)
 
-# TODO: write a function that simultaneously controls the two power supplies. => Threading
+# TODO: write a function that simultaneously controls the two power supplies and perform the rotation of the B-field. => Threading
 # in function head should be func(instr1, instr2, args1, kwargs1, args2, kwargs2)
+def b_field_rotation(instr1:pyvisa.resources.Resource, instr2:pyvisa.resources.Resource,
+                     Babs:float, startangle:float, endangle:float, angle_stepsize:float, clockwise=True)->None:
+    pass
 
 ################################################################# END OF FUNCTION DEFS ###########################################################################################