set square

She pointed to a large pull-handle set square into the center of the control board.

And it is important that you should get these straight-edges at a true right angle, testing them carefully with the set-square.

The yards were set square across, and along them were furled royals and upper topsails.

Of course, we 've got the right of it, but in some way Fate has managed to leave us set square against the law.

Time, and right doing, would remedy and set square all that was untoward.