Mark 2

Fig 1: Identifying Center Of Bore Hole Marked Using A Sliding Caliper

Courtesy of VOLVO CARS OF NORTH AMERICA.

Make a weak punch mark at A. Bear in mind that area A will be visible after painting.
Mark the center of the bore hole using a sliding caliper with precision 0,05 mm.
R1 = 17.43
R2 = 31.51
R3 = 47.77
R4 = 39.98.