Instruments (mean characteristics):

Galvanometric instruments:

Instr. code*	Instr. Name	Component	Mass	Tg	k	µ	Al	Notes	Recording period
385007	Benioff seismograph	H	-	1	-	-	-	-	1962-pres
385061	Benioff seismograph	H	-	1	-	-	-	-	1962-pres
386054	Benioff seismograph	Z	-	1	-	-	-	-	1962-pres
398001	Jaggar seismograph	3 comp.	-	hort	-	-	-	-	1972-pres
413066	Milne-Shaw seismograph	N-S	-	12	-	-	-	-	1938-
413005	Milne-Shaw seismograph	E-W	-	12	-	-	-	-	1921-
507001	Sprengnether short period horizontal seismograph	E-W	-	1.5	-	-	-	-	-
507002	Sprengnether short period horizontal seismograph	N-S	-	1.5	-	-	-	-	-
511002	Sprengnether vertical long period seismograph	-	-	15	-	-	-	-	-
509010	Sprengnether vertical short period seismograph	Z	-	1.5	-	-	-	-	-
375009	Wilip vertical seismograph	Z	-	11.16	175	0.05	-	-	-

*In the TROMOS database