18x Viscometers Could accuracy 0.1% range from 0.5 to 285,000 cSt

TCSB 91 / 1S separately (specially developed) (prjis: € 155, =)

UBBELOHDE 0C-4 (12 Could standard visco’s with high accuracy series 88/1) (price: € 1.265, =)

UBBELOHDE 4 (95-1) + 1x Ostwalds 8-11 (these 5 as series for calibrating very viscous liquids), (price: € 635, = or € 131, = / pc)

They are all valuable tubes, with which other tubes can be calibrated.