to tooth a saw

The ropeline to be installed this time was designed for downhill use only and consisted of spans of more than 1,000 meters each.

You'd better run over your statement before going on the platform.

The restriction was deliberate, for the Senate attach[ed] great importance to high distinction in the classes and tripodes of Oxford and Cambridge, from its known influence on the minds of students, and the character which it would impart to out Institution in its period of greatest trial.