ST5900 ST5900 Ultrasonic Thickness Gauge is simple marking, the price is very cheap, only be used to measure the steel, iron objects thickness of material. Velocity 5900m / s fixed. Technical parameters Measuring range 1.2-200mm Velocity 5900m / s only for a resolution 0.1mm steel supply 7 # battery 1 Dimensions 107 × 60 × 15mm Weight 100g OND-220 Ultrasonic Thickness Gauge Product Description: Display resolution: 0.1mm suitable for measuring metals, plastics, ceramics, glass and any other good conductor of ultrasonic thickness large-screen LCD backlit display handheld gauge, adjustable contrast measurement units Metric / Imperial optional with minimum capture mode can be stored, delete, view 500 Anti-known thickness measurements measured speed of sound, two-point calibration reluctance thickness, can improve the accuracy of OND-220 Ultrasonic Thickness Gauge Specifications: Measuring range: 1.2mm ~ 225.0mm (Steel) Pipe measurement limit: Φ20mm × 3.0 mm Display Resolution: 0.1mm Accuracy: ± (1% H +0.1) mm H is the measured actual thickness Velocity adjustment range: 1000m / s ~ 9999m / s unit of measurement: Optional mm / inch to improve accuracy: two points calibration, the known thickness of the anti-minimum thickness measured speed of sound capture mode: choose to display the current thickness or minimum thickness value data storage: can store, view, delete 500 measured values ??and five velocity values ??receive gain settings: high / low gain Optional Display: large-screen LCD backlit digital display, adjustable contrast voltage indication: Low-voltage indication Ambient temperature: -10 ~ +60 ℃ Power supply: two AA-size alkaline batteries 1.5V / section working time: up to 100 hours (without backlight) Dimensions: 152mm × 74 mm × 35 mm Weight: 370g Thickness Gauge _ coating thickness _ reluctance provided by 星枫 instruments. Nanchang Xing Feng Instrument Co., Ltd. (www.xingfengyiqi.com) in DME, coating thickness gauge, ultrasonic thickness gauge, hardness tester, vibrometer industry has high visibility, integrity management, quality of service both are welcome to inquire or consult our "Business League call" it!