AN REFERENCE MACHINE MODEL DESIGN MEASUREMENTS LEVER ARMS DISTANCE BETWEEN CENTRAL POINTS DRILL LE-1 A= B= 50x10 100 16,5 LE-2 A= B= 50x8 60 12,5 LE-3 A= B= 50x10 68,5 12,5 LE-4 A= B= 60x12 46 16,5 LE-5 A= B= 50x10 80 12,5