苫小牧 52B型強震計


記入日成分ToVrv
1968.05.16S-N6.110.038
E-W6.010.028
U-D5.010.058
1969.09.09S-N6.010.018
E-W6.010.018
U-D5.010.048
1974.11.08S-N6.110.019
E-W6.010.019
U-D5.310.017