Bosch Digital Level GIM 120 48 Inch Inclinometer Rotating Display (IP54 Dust Protection Dual Vials Audio Tone Precision Angle Alignment) Roman Ogee Bit Brand Sub Brand IRWIN Brand Sub Brand IRWIN QUICK GRIP Series Name Mini One Handed Clamping Force (Max) 140 lbs Set Quantity 4 Pieces Clamp Sizes Included Two 6 inch 11 UNC Standard Spindle Mechanical Clutch System Super Joint System (SJS) Bind Up Clutch Switch Type & Safety Paddle Switch with Two Stage Lock Off (No Lock On) Motor Control Electronics Constant Speed Control this 48 inch level streamlines angle transfer tasks across complex jobsite layouts drainage slope verification