PROBLEM TO BE SOLVED: To measure load data with good efficiency and in large quantities by a method, wherein a plumb bob is made to fall freely on a coupled body and the load data which is loaded on a plurality of shock absorbing members is measured by each load meter.
SOLUTION: When a plumb bob 1 falls freely on a base, for shock-absorbing device mounting, whose surface is kept horizontal, the plumb bob 1 applies a load in the x-axis direction with reference to the base 2 for mounting in a state where the coupling protruding part 1a of the plumb bob 1 is fitted to the recessed part of the base 2 for mounting. When an impact force with reference to shock absorbing device M1, M2 due to the fall of the plumb bob 1 is at a certain value or higher, respective pins 10 for limit load guarantee of the absorbing devices M1, M2 are broken, compressed load is given in the axial direction of respective members 6 for absorption with respect of to taps 5 of the absorbing devices M1, M2, and cracks are generated along grooves, which are formed on outer circumferential faces of the members 6 for absorption. Therefore, load level at of start destruction of the pins 10 can be suppressed to be low, and the destruction of the pins 10 progresses stably. As a result, a load which is applied to the members 6 for absorption can be kept nearly constant over a comparatively long time.