Surveying. a permanent mark set at a specific distance in a specific direction from a survey station so as to permit accurate reestablishment of the station.
2.
any of various written or printed symbols, as an asterisk (*), dagger (†), or superscript number, used to indicate the presence of further information in a footnote, bibliography, or other text.
Origin
1855-60
Examples from the web for reference mark
Insert to fully seated position or to reference mark on pipe.
When its leading edge is tangent to the reference mark the clock time should be recorded.
The use of object reference mark-up allows many forms to be pre-populated with business data drawn from the business profile.
Some observations were made on existing benchmarks and some on special gravity survey disks and gravity reference mark disks.
As the water level in the inner ring reached the upper reference mark, a stop watch was started.
The time it took for the water level in the inner ring to reach the lower reference mark was recorded.
The reference mark will be corrected in an applicable revision, to be issued separately.