Instruments (mean characteristics):

Mechanical Instruments:

Instr. code*	Instr. Name	Component	Mass	To	Damp.	Vo	Mass dir.	Notes	Recording period
297025	Wiechert horizontal astatic seismograph weighing 1000 kg	N-S,E-W	1000	-	-	-	-	From 1903.10.13.	1903-1954
335016	Wiechert vertical astatic seismograph weighing 80 kg	Z	80	-	-	-	-	-	1912-1914

Galvanometric instruments:

Instr. code*	Instr. Name	Component	Mass	Tg	k	µ	Al	Notes	Recording period
052005	Ehlert triple horizontal photographic pendolum	H	-	-	-	-	-	-	1902-1914
362013	Galitzin galvanometrical recording seismograph for vertical component	Z	-	-	-	-	-	-	1925-1954
373005	Wilip seismograph	H	-	-	-	-	-	-	1928-1954
373022	Wilip seismograph	H	-	-	-	-	-	-	1928-1954

*In the TROMOS database