Comparison : Item # 1612-02, Buret, Class B, Three-Way Stopcock, 25mL, 0.03mm Tol., 617mm Approx. Length
Item # 1612-04, Buret, Class B, Three-Way Stopcock, 50mL, 0.05mm Tol., 748mm Approx. Length
Item # 1612-06, Buret, Class B, Three-Way Stopcock, 100mL, 0.10mm Tol., 794mm Approx. Length