Block Level, Overall Height 1 3/4 in, Overall Length 12 in, Overall Width 2 in, Number of V-Grooves 1, Number of Level Vials 2, Number of Plumb Vials 0, Number of Cross Test Vials 2, Vial Graduations .00024 in/ft, Features With Transverse Vial. V-Groove on Bottom for Shafts (Shafts Diameter 0.63 to 2.76 in), Total Number of Vials 2, Sensitivity 0.00024 in/ft, Mount Type Not Applicable, Frame Material Cast Steel, Calibration Certificate Not Certified, Level Orientation Horizontal