Grieg wrote:

For that matter, spinning iron should have gone away a long time ago,
too. Laser gyros draw less power, are more consistent, don't precess,
and have no moving pars save a stream each of electrons and photons.

Solid State sensors are an option too but I want a way to backup vacuum gyros.

--
Chris W

"They that can give up essential liberty
to obtain a little temporary safety
deserve neither liberty nor safety."
-- Benjamin Franklin, 1759 Historical Review of Pennsylvania