The transportation of instruments must also be done with care, always pack instruments in large boxes with plenty of packaging. Ensure when the box is sealed that the packing is tight enough as not to let anything move around in freight.
If packing pitot-static instruments put plugs in the pitot and static ports, but make sure the plugs have small holes to vent pressure changes which may occur over the freight period. This is especially important if the freight is travelling by air.
Gyroscopic instruments which can be caged must ALWAYS be caged for freight!!! Failing to cage a gyro for freight can result in damage and can void warranties.