[High Precision Probe]- Uses Principles of Electro-magnetic Induction(F-probe)and Current Effect(N-probe), The Paint Thickness Gauge Meter Automatically Detects The Attribute of Substrates,with ZERO reset key/CAL calibration key for greater accuracy of the device. [Accuracy & Reliability]- Paint Coating Thickness Gauge Measuring Range 0-1500um, 0~59.1mil , Accuracy (3% + 2um) , Resolution 0.1um / 0.01mil . The Minimum: Curvature Radius 5mm, Concave Radius as 25mm , Area (Diameter): 6mm [Auto Reads Steel and Aluminum]Coating Paint thickness gauge Designed with dual technology, the non-destructive Coating Thickness Tester takes the work out of testing surface coatings by providing automatic recognition for both ferrous and non-ferrous substrates. [A Useful, Versatile Meter for Many Applications] perfect for checking the car painting thickness checker, like used cars paint, powder coating, anodized aluminum, bathroom fittings, bike frames, stadium seats, outdoor sheds, furniture, swing sets, cabinets and lockers, computers, appliances, and toys. Coating Thickness Gauge] - Two units Available: mm/.Two measurement modes: single point measurement /fast continuous measurement.High/Low Alarm Function,and you can set any alarm thickness value.MAX/MIN Value.Auto Power Off without any operation within 10 minutes.Battery indicator.Mini size and easy to carry. LCD display with backlight. Colour:blue Material:ABS Size: 48.01 x 26.01 x 119.99 cm Package Contents: 1 x Paint Thickness Gauge 1 x Screwdriver 1 x Lanyard 1 x English manual 2 x Aaa Batteries 1 x Cloth Bag 1 x Iron Base 1 x Aluminum Base 5 x Calibration Sheet Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.