Be wary if you are considering used meters and gauges. This is just one example of the many stories we hear about and see. A new SVP manifold customer had purchased some of their other neon equipment “used” from an Internet source. They were told this is what they needed to monitor bombarding current. Our customer said it didn’t work right and asked us to take a look at it for them. The first thing noticeable is the size of the meter.  It is too small to read from any distance, such as if it were mounted on a wall away from the operator. Second, if you look closely, the meter has a range of 0-10 Amperes, which is 0-10,000 mA. It is completely useless for bombarding purposes. When the bombarder was engaged and turned up to an actual current of 1,000 mA this meter would only go to “1” (the first graduation on the scale) as 1 amp equals 1,000 mA.