Products: RCL-930II smart crack width gauge for a variety of materials with PDA surface crack width detection. The system automatically detects cracks in the measured and imaged on the screen, real-time graphical display of cracks and crack width value, and crack image and data needs to be saved. Features: color video image acquisition, real clear and vivid; compact hardware design, user-friendly operation and carry; large capacity miniSD card can store large amounts of data can be extended; with large capacity lithium battery; in JPEG format or BMP format Save crack image and data; reliable performance IP54 dust and water level: a 5 dustproof, waterproof 4; Technical parameters: Hardware platform: embedded hardware platforms, Wince operating system, true color and with a touch screen; detection range: 0.01mm ~ 8mm; detection accuracy: 0.01mm; Storage: Standard 2GBminiSD card, expandable; Power supply: rechargeable lithium battery; master volume: 112 * 70 * 30mm; Operating temperature: -20 ℃ ~ + 60 ℃; Working Hours: 36 hours; Humidity: ≤80% RH. Weight: 350g