Master Level Overall Height 5 7/8 in Overall Length 5 7/8 in Overall Width 1 3/8 in Number of V-Grooves 2 Number of Level Vials 2 Number of Plumb Vials 0 Number of Cross Test Vials 1 Vial Graduations 0.05 mm/m Features Slide Viewing Slots Total Number of Vials 1 Sensitivity 0.05 mm/m Mount Type Mounting Bracket Frame Material Cast Iron Calibration Certificate Available Separately Level Orientation Horizontal Vertical Precision Vial Properties Graduated Shape Square