... manual measurements are allowed. 2.Easily installed JLA-2 Digital Display Viscometer:1.Both automatic measurement and manual measurements are allowed.2 ... liquid, oil, food, medicines, adhwsive, etc Item JLA-2 Display digital Rotor speed(r/min) 6/12/30/60 Speed adjustment ... .s) 10-100000 Measurement error (Newton Liquid) ±2% JLA-2 Digital Display Viscometer