Project specification tolerance optional note ItemSpecificationToleranceOptionsRemarksMaterial beryllium copper, beryllium copper material, Paliney7 B: beryllium. C: copper; P: electroplating D Probe Diameter of 0.50 mm + / - 20.0 um acuity 50.00 um Probe Diameter Probe Diameter L1 cone Length 4.00 mm + / - 0.01 mm or 1.75 mm Taper Lengh cone Length L2 needle arm Length 13.20 mm + / - 0.02 mm or 8.00 mm Beam Length of the arm L3 Length needle Length 1.80 mm + / - 0.01 mm or 0.80 mm Tail Length Length of the needle base bending Angle 120 ° E + 2 ° 90 ° or Bend Angle bending Angle R needlepoint R6.00 um + / - 0.50 0.50 um um acuity Tip Radius needlepoint in R theta Tip Angle of 10 ° + 1 ° 5 ° or Tip Angle Tip Angle