Ruler 4+740..5+480 (38 stations, 20 m). Two decimal series per station: A (|across|~33 m) varies with terrain; B (|across|~16 m) rises ~0.498 m per station (2.49% grade). Series naming and the ruler scale (chord ~21.27 m per 20 m station) are left to HITL. Output is a draft; no value is adjusted. Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01A5Cun3RHQKna9qxE6ybZ4A