Graphic representation of a point symbol. Two horizontal lines, each 1 mm wide, spaced 2 mm apart.
Geometrypoint
Geometry DescriptionTwo horizontal lines, each 1 mm wide, spaced 2 mm apart.
Verified?yes
Verification Methodsystematic study involving people with visual impairments
Verified by (count)15
Verified Technique(s)Swell paper, UV printing, 3D printing
Recommended Technique(s)Swell paper, UV printing, 3D printing
Planar Size (mm)4 by 7
Symbol Height (mm)2
Line Element Width (mm)1
Colour (HEX)#000000
Input Source Typejournal article
DOIhttps://doi.org/10.1080/15230406.2024.2379456
Meaning / Map usestairs