Worth while purchase, tested all the meters in the shop. We ended up finding atleast 5 meters were out by over 10volts +/ -, when dealing with VFD and PLC this is huge.

Standard bit of kit, trustworthy make.

Great Price. New Fluke product.

Good for voltage proving.

I purchased this almost immediately upon learning of its existence. I’m a strong believer in LDL testing, but let’s be honest: that is almost impossible in real-life industrial field work. Your average plant doesn’t have receptacles located anywhere (much less everywhere) you might need to prove your meter for troubleshooting purposes, much less for confirmation of hazardous energy isolation. Another benefit of a proving unit such as this is being able to practice what you preach: all safety programs stress LDL testing, and this device makes such a life-saving policy remarkably convenient. I’ll go so far as to say that this kind of tool should be a requirement on every electrical job site, and the fact that it isn’t just goes to show that “safety departments” are intended to keep insurance costs down and deflect liability instead of actually improving employees’ work safety environment.