backlash mode: MEAN BACKLASH

                                                PINION                     GEAR
    number of teeth:                                13                       73
    teeth ratio:                                              5.615385
    module (mm):                                              1.000000
    addendum modification coefficient:               0.500000         -0.500000
    cutting addendum modification coefficient:       0.431313         -0.568687
    hob tooth thickness increment (mm):              0.000000          0.000000
    standard pressure angle (deg.):                 20.000000         20.000000
    working  pressure angle (deg.):                          20.000000
    standard center distance (mm):                           43.000000
    working  center distance (mm):                           43.000000

    contact ratio @:                                          1.469245
    contact ratio * calculated by involute roll angle:        1.469245

    circular backlash, input value (mm):                      0.100000
    circular backlash, calculated to check (mm):              0.100000
    backlash equation mode: ZERO BACKLASH (gear industrial standard equation)
    PINION and GEAR teeth thinned each for 50% of backlash
    span measurement by caliper (mm):               4.905305          22.774385
    numbers of teeth spanned:                       2                         8
    over pin measurement (mm):                     15.872642          74.301576
    pin diameter (mm):                              1.728000           1.728000

    clearance between pinion top and gear root(mm):           0.318687
    clearance between gear top and pinion root(mm):           0.318687
    clearance between pinion top and hob root(mm):            0.181313
    clearance between gear top and hob root(mm):              0.181313
    effective tooth face width(mm):                          10.000000
    tooth depth or hob cutting depth (mm):           2.318687          2.318687
    circular tooth top thickness (mm):               0.257853          0.785492

    DIN tooth form factor, tip loading:              2.534901          2.675586
         balanced comparison:                        2.534901          2.675586
    AGMA geometry J factor, tip loading:             0.300686          0.252379
         balanced comparison:                        0.300686          0.252379
    AGMA Geometry I factor:                                   0.135961

    diameter of root circle (mm):                   11.362626         69.362626
    diameter of base circle (mm):                   12.216004         68.597561
    diameter of intersection circle (mm):           12.243040         70.324006
    diameter of standard pitch circle (mm):         13.000000         73.000000
    diameter of working pitch circle (mm):          13.000000         73.000000
    diameter of outside circle (mm):                16.000000         74.000000
    diameter of maximum outside circle (mm)
    without hob root interference:                  17.929325         74.015620

    arc angle of approach action (deg.):                         13.077054
    arc angle of recess action (deg.):                           27.609740

    shortest distance between intersection
    and the mating tooth tip:                        0.002990          0.082243

    0.01 interference angle
    GEAR tooth tip access angle to PINION SAP (deg.)          4.751191
    PINION tooth tip access angle to GEAR SAP (deg.)          1.043461

    diameter of LC (mm):                            12.328020         71.201845
    diameter of LPSTC (mm):                         12.993990         71.993801
    diameter of HPSTC (mm):                         14.367332         73.006023
    diameter of HC (mm):                            16.000000         74.000000
    arc angle of 2-pair tooth contact(deg.):        25.988972          4.628173
    arc angle of 1-pair tooth contact(deg.):        14.697822          2.617420
 
    intersection: intersection of root fillet and involute 
    LC: lowest contact point or start of the active profile (SAP)
    LPSTC: lowest  point of single tooth contact
    HPSTC: highest point of single tooth contact
    HC: highest contact point or end of the active profile (EAP)
    When either pinion or gear is undercut distinctly,
    contact ratio @ and contact ratio * could be different from each other.
    Take the smaller value as contact ratio in such a case.