subtense bar

subtense bar

[¦səb′tens ′bär]
(engineering)
The horizontal bar of fixed length in the subtense technique of distance measurement method.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Directions were measured by precise optical instruments Zeiss Theo 010A, and distances were measured by parallactic method with 2 m subtense bar. An accuracy level of horizontal positions of points is about 1-3 mm.