Instruments (mean characteristics):

Mechanical Instruments:

Instr. code*	Instr. Name	Component	Mass	To	Damp.	Vo	Mass dir.	Notes	Recording period
187007	Agamennone double component horizontal pendulums seismograph	-	-	-	-	-	-	-	1900-1920
266024	Mainka horizontal pendulum	NE-SW	136	6.0	4.7	80	-	Characteristics are for the period 1911 - 1915.	1911-1963
266085	Mainka horizontal pendulum	NW-SE	136	6.0	4.7	80	-	Characteristics are for the period 1911 -1915.	1911-1963
297009	Wiechert horizontal astatic seismograph weighing 1000 kg	N-S,E-W	1000	9.2	4	175	-	Characteristics are for the period 1928-1949.	1924-1981
361004	Wiechert vertical astatic seismograph weighing 1300 kg	Z	1300	4.0	3.5	140	-	Characteristics are for the period 1928-1949.	1928-1981

Galvanometric instruments:

Instr. code*	Instr. Name	Component	Mass	Tg	k	µ	Al	Notes	Recording period
386083	Benioff seismograph	Z	-	-	-	-	-	-	-
385102	Benioff seismograph	N-S	-	-	-	-	-	-	-
385101	Benioff seismograph	E-W	-	-	-	-	-	-	-
508030	Sprengnether horizontal long period seismograph	E-W	-	-	-	-	-	-	-
508084	Sprengnether horizontal long period seismograph	N-S	-	-	-	-	-	-	-
511045	Sprengnether vertical long period seismograph	Z	-	-	-	-	-	-	-

*In the TROMOS database