Level marker
Level datum marker for elevations and sections: a horizontal line with a half-filled downward triangle.
- Elevation
- annotation
Drawn at 68 × 26 (1 unit = 1 cm).
Free for personal and commercial drawings. No credit needed.
Where it's used
Elevations and sections: floor levels, eaves, ridge and ground.
Drawing it
Put the point of the triangle on the level and write the height beside it, for example ±0.00 and +2.80.