/usr/share/survex/bcra3.svx is in survex 1.2.26-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | ; BCRA Grade 3 specification file
; tape error
; 95.44% of readings are within 0.5m (2 S.D.)
*sd length backlength 0.25 metres
; compass error
; 95.44% of readings are within 2.5 degrees (2 S.D.)
*sd bearing backbearing 1.25 degrees
; clino error
; 95.44% of readings are within 2.5 degrees (2 S.D.)
*sd gradient backgradient 1.25 degrees
; station position error
; 95.44% of positions are within 0.5m (2 S.D.)
*sd position 0.25 metres
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