1.Electronic Stopwatch,Stopwatch 2.Viscosity Cup Stopwatch,It is Special for viscosity cup. Electronic Stopwatch Technique Parameters:Model:TA228Tolerance: <0.1 secondMaterial: environment-friendly plastic Characters:Bigger digital screen, more visuallyDetailed time display Precise, portable, durable and easy to use.Combined with the viscosity cup, precisely test the time and flowing speed of the ...