Iron, lead and zinc triple-use: more comprehensive and to the point,Highly sensitive probe automatically recognizes the substrate.
Small Area Substrate Measurement: Mini Convex Curvature Radius 5mm,Mini Concave Curvature Radius 25mm,Mini Measurement Area Diameter 20mm.
Built-in 600mAh lithium battery, can be set to automatic shutdown, no operation for 5 minutes automatically shut down to extend the battery life!