Ubbelohde viscometer 0.8-5mm²/s calibrated

Ubbelohde viscometer, DIN type with printed constant according to ISO/DIN 3105, DIN 51502, BS 188, KFT 60-100, No. 0a, inner Ø 0.53 mm, K 0.005, measuring range 0.8-5 mm²/s, calibrated, four-legged