Virtual exhibition of magnetic instruments

01-magnetometrein
02-magnetometreind
03-magnetometrebmz
04-magnetometredover
05-magnetometreqhm
06-magnetometreruska
07-variometremas
08-variometremasc
09-variometremascz
10-variometrelacour
11-variometrelacourd
12-variometrelacourz
01/12 
start stop bwd fwd
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