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Crazy Diameter (math error)

Edit: reducing the hits to 3 INCREASED the accuracy of my measurements. Special thanks to UKCMM!




So I was measuring a cylinder and I got some pretty crazy results (See the diameter). Trying to figure out why this happened beyond some good ol' fashion PC DMIS math magic: none of the hits seem to be varying a crazy amount (at least not WHOLE INCH level of crazy) so I was wondering if any of the experts out there had some insight into how this could have happened so I can avoid it in the future without having to just remeasure the feature until it works.


Code:

LEFT_CUTOUT =FEAT/CONTACT/CYLINDER/DEFAULT,CARTESIAN,IN,LEAST_SQR
THEO/<-3.6115,0.601,3.8812>,<0.943801,0,0.3305144>,0.2,-0.125
ACTL/<-3.4513,20.3725,4.1557>,<0.9510529,-0.0114305,0.3088165>, 39.6259,-0.125
TARG/<-3.6115,0.601,3.8812>,<0.943801,0,0.3305144>
START ANG=0,END ANG=-180
ANGLE VEC=<-0.3305144,0,0.943801>
DIRECTION=CW
SHOW FEATURE PARAMETERS=YES
VOID DETECTION=NO
REMEASURE=NO,USE THEO=NO
SURFACE=THICKNESS_NONE,0
MEASURE MODE=NOMINALS
RMEAS=LEFT_NOTCH,LEFT_EDGE,LEFT_NOTCH
AUTO WRIST=NO
CIRCULAR MOVES=CIRCULAR
GRAPHICAL ANALYSIS=NO
FEATURE LOCATOR=NO,NO,""
SHOW CONTACT PARAMETERS=YES
NUMHITS=8,NUMLEVELS=4,DEPTH=0.02,END OFFSET=0.02,PITCH=0
SAMPLE METHOD=SAMPLE_HITS
SAMPLE HITS=0,SPACER=0
AVOIDANCE MOVE=NO,DISTANCE=0.3937
FIND HOLE=DISABLED,ONERROR=NO,READ POS=NO
SHOW HITS=YES
HIT/BASIC,<-3.6257,0.6045,3.9821>,<0.330313,-0.0348995,-0.943226>,<-3.615,0.5995,3.9847>
HIT/BASIC,<-3.622,0.6466,3.9718>,<0.2941154,-0.4562107,-0.8398619>,<-3.6114,0.6426,3.9746>
HIT/BASIC,<-3.6128,0.6801,3.9455>,<0.2021837,-0.791071,-0.577346>,<-3.6024,0.6772,3.9482>
HIT/BASIC,<-3.5998,0.6986,3.9084>,<0.0719386,-0.9760254,-0.2054245>,<-3.5888,0.6971,3.9098>
HIT/BASIC,<-3.5854,0.6986,3.8673>,<-0.0719386,-0.9760254,0.2054245>,<-3.5738,0.6981,3.8662>
HIT/BASIC,<-3.5724,0.6801,3.8301>,<-0.2021837,-0.791071,0.577346>,<-3.5599,0.6782,3.828>
HIT/BASIC,<-3.5632,0.6466,3.8038>,<-0.2941154,-0.4562107,0.8398619>,<-3.5507,0.6434,3.8012>
HIT/BASIC,<-3.5596,0.6045,3.7935>,<-0.330313,-0.0348995,0.943226>,<-3.5473,0.5999,3.7912>
HIT/BASIC,<-3.5329,0.6045,3.8029>,<-0.330313,-0.0348995,0.943226>,<-3.5205,0.5999,3.801>
HIT/BASIC,<-3.5365,0.6466,3.8132>,<-0.2941154,-0.4562107,0.8398619>,<-3.524,0.6432,3.811>
HIT/BASIC,<-3.5457,0.6801,3.8394>,<-0.2021837,-0.791071,0.577346>,<-3.5334,0.678,3.8378>
HIT/BASIC,<-3.5587,0.6986,3.8766>,<-0.0719386,-0.9760254,0.2054245>,<-3.547,0.6975,3.8759>
HIT/BASIC,<-3.5731,0.6986,3.9177>,<0.0719386,-0.9760254,-0.2054245>,<-3.5619,0.6968,3.919>
HIT/BASIC,<-3.5861,0.6801,3.9549>,<0.2021837,-0.791071,-0.577346>,<-3.5756,0.6768,3.9571>
HIT/BASIC,<-3.5953,0.6466,3.9812>,<0.2941154,-0.4562107,-0.8398619>,<-3.5844,0.6421,3.9833>
HIT/BASIC,<-3.5989,0.6045,3.9915>,<0.330313,-0.0348995,-0.943226>,<-3.588,0.5995,3.9936>
HIT/BASIC,<-3.5722,0.6045,4.0009>,<0.330313,-0.0348995,-0.943226>,<-3.5608,0.5994,4.0016>
HIT/BASIC,<-3.5686,0.6466,3.9905>,<0.2941154,-0.4562107,-0.8398619>,<-3.5574,0.6417,3.9917>
HIT/BASIC,<-3.5594,0.6801,3.9643>,<0.2021837,-0.791071,-0.577346>,<-3.5485,0.6761,3.9658>
HIT/BASIC,<-3.5463,0.6986,3.9271>,<0.0719386,-0.9760254,-0.2054245>,<-3.5355,0.6962,3.9285>
HIT/BASIC,<-3.5319,0.6986,3.886>,<-0.0719386,-0.9760254,0.2054245>,<-3.5203,0.6964,3.8851>
HIT/BASIC,<-3.5189,0.6801,3.8488>,<-0.2021837,-0.791071,0.577346>,<-3.5067,0.6772,3.8475>
HIT/BASIC,<-3.5097,0.6466,3.8226>,<-0.2941154,-0.4562107,0.8398619>,<-3.4975,0.643,3.821>
HIT/BASIC,<-3.5061,0.6045,3.8122>,<-0.330313,-0.0348995,0.943226>,<-3.4937,0.5997,3.8103>
HIT/BASIC,<-3.4794,0.6045,3.8216>,<-0.330313,-0.0348995,0.943226>,<-3.4683,0.5997,3.8234>
HIT/BASIC,<-3.483,0.6466,3.8319>,<-0.2941154,-0.4562107,0.8398619>,<-3.4716,0.6416,3.8327>
HIT/BASIC,<-3.4922,0.6801,3.8582>,<-0.2021837,-0.791071,0.577346>,<-3.4805,0.6749,3.8589>
HIT/BASIC,<-3.5052,0.6986,3.8954>,<-0.0719386,-0.9760254,0.2054245>,<-3.4936,0.6943,3.8956>
HIT/BASIC,<-3.5196,0.6986,3.9364>,<0.0719386,-0.9760254,-0.2054245>,<-3.5083,0.6942,3.9372>
HIT/BASIC,<-3.5326,0.6801,3.9736>,<0.2021837,-0.791071,-0.577346>,<-3.5215,0.6746,3.9743>
HIT/BASIC,<-3.5418,0.6466,3.9999>,<0.2941154,-0.4562107,-0.8398619>,<-3.5299,0.6405,3.999>
HIT/BASIC,<-3.5454,0.6045,4.0102>,<0.330313,-0.0348995,-0.943226>,<-3.5338,0.5994,4.0107>
ENDMEAS/

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