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Vertex 2.87789 6.94785 6.0001 facet normal 0.301701 0.851405 0.429052 facet normal -0.468218 0.881923 0.0546202 facet normal -8.502237e-01 0.000000e+00 5.264216e-01 facet normal 0.129484 0.780815 0.611197 vertex 5.40904 4.29047 7.37319 vertex 6.71541 -0.672644 7.35649 vertex -5.40904 -4.29047 7.37319 facet normal 0.690378 0.423065 0.586851 vertex 6.30465 -1.57006 19.9 facet normal 0.980787 0.19508 0 vertex 0 -2.9 19 - Could replace step IDs with a 7-segment display with LED and photoresistor 3 Lead Plastic Package OnSemi CASE 100CY, light-direction upwards, see http://www.kodenshi.co.jp/products/pdf/sensor/photointerrupter_ref/SG-105.pdf Laser Diode, TO-3.3mm.

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