reference mark

American  

noun

1. 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.

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Etymology

Origin of reference mark

First recorded in 1855–60

Example Sentences

In 1897, Venice began taking the measure of its enemy, establishing a reference mark for high water at the Punta della Salute entrance of the Grand Canal.

From New York Times • Apr. 1, 2023

Into the middle of the area he stuck a tattoo needle that left a blue dot for a reference mark.

From Time Magazine Archive

Using this for reference, mark a slot for the tang in the cut end.

From Time Magazine Archive