diff --git a/script/optics/CheckMachineBump.py b/script/optics/CheckMachineBump.py
new file mode 100644
index 00000000..3bfeb1ec
--- /dev/null
+++ b/script/optics/CheckMachineBump.py
@@ -0,0 +1,45 @@
+# script for checking the symmetry of the machine bump on Au poly
+#
+# set the beamline to FE = 6 x 0.5, Ephot = 800 (G2), EX-SL = 100
+# acquire the bump control lock manually
+
+import ch.psi.pshell.plot.RangeSelectionPlot.RangeSelection as RangeSelection
+
+rs = RangeSelection(706., 714.)
+rs.setVars([0.1, 0.05, 1]) #Time, Size, Itaration
+
+
+# MachineBumpControl.write("X03DA")
+# MachineBumpControl.write("none")
+
+print "switching to linear"
+MachineBumpMode.write("off")
+MachineBumpYAngle.waitValueInRange(0.0, 0.001, 10)
+print "running XPS spectrum"
+run("XPSSpectrum", {"save_scienta_image":True, 
+                    "ranges":[rs, ], 
+                    "ENDSCAN":False, 
+                    "pass_energy":50})
+
+print "switching to positive helicity"
+MachineBumpMode.write("pos")
+MachineBumpYAngle.waitValueInRange(0.02, 0.001, 10)
+print "running XPS spectrum"
+run("XPSSpectrum", {"save_scienta_image":True, 
+                    "ranges":[rs, ], 
+                    "ENDSCAN":False, 
+                    "pass_energy":50})
+
+print "switching to negative helicity"
+MachineBumpMode.write("neg")
+MachineBumpYAngle.waitValueInRange(-0.02, 0.001, 10)
+print "running XPS spectrum"
+run("XPSSpectrum", {"save_scienta_image":True, 
+                    "ranges":[rs, ], 
+                    "ENDSCAN":False, 
+                    "pass_energy":50})
+
+print "switching to linear"
+MachineBumpMode.write("off")
+MachineBumpYAngle.waitValueInRange(0.0, 0.001, 10)
+print "done"