This item is a magnetic car paint thickness gauge pen, often referred to as an "Auto Lak Test".
Technology: Operates using a magnetic tip to measure the thickness of varnish and paint on metallic substrates without requiring batteries.
Function: Features a color-coded scale that indicates the thickness of the paint, helping to detect hidden body repairs or thick putty.
Accuracy: Offers an accuracy of approximately 20 microns.
Unique Feature: Compact, portable, and waterproof design, making it suitable for checking paint condition in various weather conditions and hard-to-reach areas.