floating rule

floating rule

A long straightedge used as a float.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
He also advised them to have their floating rule safety device intact, noting that they were dealing with highly inflammable products.
"Colleges know this, so the fact they have been floating rules and regulations in this way is baffling.