Analysing wiper area with help of iPad2/3

no CAD, only picture taken by digital camera.
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Tracepoint B

Graph of Displacement, Velocity, and Acceleration

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Graph Data Table

Rotation
[degrees]		 X
[mm]		 Y
[mm]		 Displacement
[mm]		 Velocity
[mm / s]		 Acceleration
[mm / s^2]
360 -645.356 105.845 653.978 73.908 30365.381
12 -643.611 124.391 655.522 1017.522 25784.728
24 -637.317 171.062 659.875 1773.189 19905.172
36 -623.305 238.442 667.356 2324.42 15215.384
48 -598.545 318.849 678.175 2699.042 12645.839
60 -561.186 405.293 692.237 2933.387 11768.672
72 -510.873 491.773 709.106 3056.347 11652.704
84 -448.726 573.348 728.067 3085.81 11667.649
96 -377.184 646.186 748.214 3029.508 11622.734
108 -299.825 707.639 768.536 2886.841 11655.578
120 -221.143 756.325 787.992 2651.135 12138.415
132 -146.279 792.173 805.566 2313.266 13447.835
144 -80.623 816.355 820.326 1868.035 15535.387
156 -29.233 830.984 831.498 1323.293 17737.054
168 3.903 838.526 838.535 707.363 19120.858
180 16.553 841.025 841.188 66.412 19095.021
192 8.503 839.459 839.502 551.006 17784.823
204 -18.753 833.526 833.737 1111.445 15861.298
216 -62.662 821.882 824.267 1602.793 14070.385
228 -120.181 802.553 811.502 2028.451 12899.423
240 -188.046 773.331 795.865 2397.542 12481.663
252 -262.769 732.108 777.836 2716.958 12654.914
264 -340.502 677.234 758.015 2986.136 13099.865
276 -416.925 607.989 737.209 3193.282 13473.669
288 -487.322 525.236 716.488 3312.072 13559.636
300 -547.034 432.196 697.166 3299.257 13644.132
312 -592.4 335.13 680.625 3096.386 15148.941
324 -622.032 243.419 667.965 2643.24 19730.391
336 -637.752 168.387 659.608 1912.569 26190.564
348 -644.014 120.492 655.188 958.3 30707.722