reference_point
1. [ noun ] an indicator that orients you generally
Synonyms: reference point_of_reference
Examples:

"it is used as a reference for comparing the heating and the electrical energy involved"

Related terms: indicator standard target buoy landmark white_line lubber's_line benchmark
Similar spelling:   reference_to
  reference_system
  reference_work
  reference_grid
  reference_book
  reference_frame
  reference_manual