OHS Gaussmeter W/Transvers Probe F.W. BELL/5 5175-415175
Plate: spring w70 x l200 x t0.5mm
Roller drive ec100: gear ratio 48:1 (7-21 m/min)
Nipple: plug brass 3/4
Paper: venus copy paper a4 80g no.11(500 sheets)
Nipple: brass equal 90 id-1/4