Easy To Use Gauge without Buttons, Pocket Size, Dual Sensor (Ferrous/Aluminum), Quick Readings. Includes Soft Pouch With Clip, Instruction Manual And 2 Alkaline Batteries AA 1.5v. The Quanix Handy Is Just That - A Powerful, Pocket Sized Gauge That Measures Coating Thickness with Lightning Speed and Convenience. Readings Are On A Digital Display.  No Calibration Is Required. Get Quick Recognition and Switch to Nonferrous Metals without Pressing a Button.  Whether You Work In Auto Remarketing, Collision Repair, Or As A Buyer, This Cost-Effective Gauge Will Meet Your Needs In Determining The True Value Of A Vehicle.