Salute!
Very good, Detent. We are talking about orders of magnitude accuracy compared to what several of us flew in the 60's/70's. And they were "state of the art" that got us to the moon, etc.
As Golden commented, we have gone a long.long way from a gyro-stabilized "platform" with mechanical accelerometers "glued" on it, along with small gyros to detect rotation. And we have done it faster than anyone would have imagined.
Gums sends...