Block Level Overall Height 1 9/16 in Overall Length 6 in Overall Width 1 3/4 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