zigzag rule
zigzag rule
[′zig‚zag ‚rül] (engineering)
A folding ruler having pivoted sections that lock when the ruler is opened.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
zigzag rule
A folding rule whose sections are pivoted; stiff when fully opened.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.