Nanchang 星枫 Instrument Co., Ltd. (www.xingfengyiqi.com) is located in Nanchang, Jiangxi Nanchang Road Qingyunpu three No. 44, Contact: Zhengjing VICTOR 852C ultrasonic thickness measurement range: 1.2 to 220 mm (steel) Accuracy: ± (1% H +0.1) mm Resolution: 0.1mm Velocity range: 1000 ~ 9999m / s Operating frequency: 5MHz Pipe measurement limit: Φ203mm (steel) automatic proofreading zero electrolytic thickness, systematic errors can be correction automatically compensates for linear digital gauge, in the whole range of the probe using computer software nonlinear error correction to improve the accuracy of data storage / data query / data delete function to measure the speed of sound: direct measurement of the speed of sound based on its thickness specimens low power indicator Auto power off function LCD backlight function Power supply: 3 1.5V AAA batteries Product Weight: 220 g Dimensions: 145 × 72 × 35 毫米 DC-2000B Ultrasonic Thickness Gauge magnetic paint thickness measurement method can be non-destructive measurement of magnetic metal substrates (such as steel, iron, alloy and hard magnetic steel, etc.) on the thickness of non-magnetic coating layer (such as aluminum, chromium, copper, enamel, rubber, paint, etc.). Eddy current thickness measurement method, the non-destructive measurement of magnetic metal substrate (such as copper, aluminum, zinc, tin, etc.) the thickness of the non-conductive covering layer (such as: enamel, rubber, paint, plastics, etc.). Technical parameters display method: 128 * 32 LCD dot matrix LCD Chinese (with backlight) Display digits: four measuring range :0.7-250mm Indication accuracy: 0.01mm Velocity range :1000-9999m / s measurement period: 2 / s auto-off time: 90 seconds Power: two AAA batteries (AAA), less than 72 hours of continuous work temperature: -10 ° C - 40 ° C Storage temperature: -20 ° C - 70 ° C Dimensions : 108x61x25mm Weight: 230g (with battery) Standard equipment Host: DC-2000B a probe: PT-12 and PT-06 coupling agent: bottle battery: AAA Size two random data: an instrument case: a