Steel Aluminum Red Copper Zinc Quartz Glass Ultrasonic Thickness Gauge 1.0-245mm Dongguan Yida Electrical Equipment Engineering Co., Ltd. Base Info Type:Feeler GaugeTest Methods:Through Check Method Description Pre:Mini Electronic Scale 40kg/10g (WH-A01L/A01B) Next:4.5 Digits LCD Steel PE Cast Iron Aluminum Ultrasonic Thickness Gauge 1-300mm