Seeing even his books standing rigidly at attention made her uncomfortable.
In some islands this rule is rigidly adhered to.
The difference between the seasons is not rigidly marked.
They provided a splendid, rigidly mounted, equatorial stand, fitted with every luxury in the way of slow motion, and scales for measuring the displacement of the segments were read by powerful micrometers from the eye-end.
It is, however, unstable unless rigidly fixed at the piers.