sirfuzzitoes

I'm not familiar; is MFHF motherfucking high frequency?

I've dealt with a lot of qc/qa involved industries holding incredibly tight tolerances down to .00005. I've used various methods of calibration, certification, and so on. A brief example is indepently certified metal references.

What do you calibrate against?

Some of us prefer bullet sponge!

I'll try to convey better. We use standards, which need certification at whatever intervals. We send them off to people like you. All the way down the line (state lab for you). Who maintains The Standard?

I'm assuming even the international standards need certification. Does it end in a humans hands? Do the keepers of the standards check against one another or something, in the end?

There is absolutely a way and they're called rechargeable batteries. Assuming a battery swap is around a minute, you're really not losing productivity or outlay costs if you need to switch to rechargeable.