This is Lily from SHANXI XIELI photo electric instrument CO, Ltd. We are a professional manufacturer of digital panel meter for 15 years.Our meter are widely used for welder.We have the 3 1/2, 4 1/2 and 5 digital Voltmeter, digital Ammeter, digital Power Meter, Digital Frequency meter, digital timer, digital counter and so on.Following is the detailed explation of our meter:1. XL5135 3 1/2 series:It have voltmeter and ammeter,can measure AC and DC.It support DC5V,AC9V,AC110V,AC220V.The feature of this kind of meter is :ultra-thin appearance with arc design, elaborate and elegant, more than 50,000 hours longlife.Dimension: 79X42.5X25.5mmPlease visit our web at www.xieli-china.com to know more about our meter.I will send the detailed information and price if you need.