rod level[′räd ‚lev·əl]
A spirit level attached to a level rod or stadia rod to ensure the vertical position of the rod prior to instrument reading.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
An accessory for use with a leveling rod or a stadia rod to assure a vertical position of the rod prior to instrument reading.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.