- a sight on a previously occupied instrument station.
- (in leveling) the reading on a rod that is held on a point of known elevation, used in computing the elevation of the instrument.
Origin of backsight
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for backsight
- the sight of a rifle nearer the stock
- surveying a reading taken looking backwards to a previously occupied stationCompare foresight (def. 4)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012