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Aug 11 2014 (18:58)
Blog Post# 1184633-0
WDP 4D ET Added by: Love the weather of Bangalore Aug 11 2014 (22:40)
#GradeIndicator---- Ground level signs on a concrete slab base, with a number and an upward or downward pointing arrow, indicating a grade. A number '500', for instance, indicates a grade of 1 in 500. Black on white.
The arrow is often simply a 'v'-shaped mark instead of a full arrow symbol. A similar sign without an arrow and an 'L' instead of a number indicates the end of the grade.