I think the TBR is the confusion here
TBR in my book is True Ballistic Range (TBR)
Leave this out of the discussion here on Leica
The 2400-R does Equivalent Horizontal Range (EHR)
This gives
Integrated inclinometer measures upward or downward angle relative to target
Internal barometric and temperature sensors measure atmospheric conditions that can affect bullet trajectory and ballistic arc
Equivalent Horizontal Range (EHR): An algorithm that uses distance and angle to calculate an adjusted range
So it does not have the option of full Ballistic Calculations that can be preset via micro SD card etc
But it gives angle degrees - temp - barometric
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